4OA - Ideal conformer
     RDKit          3D

 67 70  0  0  0  0  0  0  0  0999 V2000
    4.2000    1.6930   -0.6420 C   0  0  0  0  0  0  0  0  0  0  0  0
    3.4290    0.4210   -1.0030 C   0  0  1  0  0  0  0  0  0  0  0  0
    1.3220    1.5620   -0.2830 C   0  0  0  0  0  0  0  0  0  0  0  0
    0.0130    1.4460    0.5160 C   0  0  0  0  0  0  0  0  0  0  0  0
   -0.7040    0.2020    0.0290 C   0  0  1  0  0  0  0  0  0  0  0  0
    0.1830   -1.0190    0.3940 C   0  0  1  0  0  0  0  0  0  0  0  0
   -0.7760   -2.1860    0.1350 C   0  0  0  0  0  0  0  0  0  0  0  0
   -2.1200   -1.6680    0.7170 C   0  0  0  0  0  0  0  0  0  0  0  0
   -2.0370   -0.1210    0.6950 C   0  0  2  0  0  0  0  0  0  0  0  0
   -0.8870    0.2720   -1.4880 C   0  0  0  0  0  0  0  0  0  0  0  0
    3.0120    0.4770   -2.4740 C   0  0  0  0  0  0  0  0  0  0  0  0
    5.8830    0.3670    2.4440 O   0  0  0  0  0  0  0  0  0  0  0  0
    4.6100    1.6390    0.8310 C   0  0  0  0  0  0  0  0  0  0  0  0
   -3.1930    0.4600   -0.1230 C   0  0  2  0  0  0  0  0  0  0  0  0
   -3.1190    1.9880   -0.0960 C   0  0  0  0  0  0  0  0  0  0  0  0
   -4.5230    0.0030    0.4790 C   0  0  0  0  0  0  0  0  0  0  0  0
   -5.6750    0.4800   -0.4090 C   0  0  0  0  0  0  0  0  0  0  0  0
   -6.9850    0.0300    0.1840 C   0  0  0  0  0  0  0  0  0  0  0  0
    5.5010    0.4180    1.0680 C   0  0  2  0  0  0  0  0  0  0  0  0
    4.7320   -0.8540    0.7040 C   0  0  0  0  0  0  0  0  0  0  0  0
   -8.1390    0.3370   -0.4290 O   0  0  0  0  0  0  0  0  0  0  0  0
   -6.9970   -0.6060    1.2110 O   0  0  0  0  0  0  0  0  0  0  0  0
    4.3230   -0.7990   -0.7690 C   0  0  1  0  0  0  0  0  0  0  0  0
    3.5530   -2.0710   -1.1310 C   0  0  0  0  0  0  0  0  0  0  0  0
    2.3010   -2.1780   -0.2580 C   0  0  0  0  0  0  0  0  0  0  0  0
    1.4090   -0.9590   -0.4980 C   0  0  2  0  0  0  0  0  0  0  0  0
    2.1830    0.3140   -0.1230 C   0  0  1  0  0  0  0  0  0  0  0  0
    5.0920    1.7660   -1.2650 H   0  0  0  0  0  0  0  0  0  0  0  0
    3.5660    2.5630   -0.8120 H   0  0  0  0  0  0  0  0  0  0  0  0
    1.0850    1.6990   -1.3380 H   0  0  0  0  0  0  0  0  0  0  0  0
    1.8800    2.4280    0.0710 H   0  0  0  0  0  0  0  0  0  0  0  0
    0.2350    1.3540    1.5790 H   0  0  0  0  0  0  0  0  0  0  0  0
   -0.6080    2.3250    0.3410 H   0  0  0  0  0  0  0  0  0  0  0  0
    0.4640   -0.9850    1.4470 H   0  0  0  0  0  0  0  0  0  0  0  0
   -0.8680   -2.3810   -0.9330 H   0  0  0  0  0  0  0  0  0  0  0  0
   -0.4470   -3.0810    0.6640 H   0  0  0  0  0  0  0  0  0  0  0  0
   -2.9510   -2.0070    0.0980 H   0  0  0  0  0  0  0  0  0  0  0  0
   -2.2460   -2.0220    1.7400 H   0  0  0  0  0  0  0  0  0  0  0  0
   -2.0570    0.2730    1.7110 H   0  0  0  0  0  0  0  0  0  0  0  0
    0.0860    0.3770   -1.9670 H   0  0  0  0  0  0  0  0  0  0  0  0
   -1.3680   -0.6410   -1.8390 H   0  0  0  0  0  0  0  0  0  0  0  0
   -1.5100    1.1300   -1.7400 H   0  0  0  0  0  0  0  0  0  0  0  0
    3.9010    0.5530   -3.1010 H   0  0  0  0  0  0  0  0  0  0  0  0
    2.4630   -0.4290   -2.7310 H   0  0  0  0  0  0  0  0  0  0  0  0
    2.3760    1.3470   -2.6390 H   0  0  0  0  0  0  0  0  0  0  0  0
    6.3760    1.1430    2.7450 H   0  0  0  0  0  0  0  0  0  0  0  0
    5.1580    2.5450    1.0890 H   0  0  0  0  0  0  0  0  0  0  0  0
    3.7180    1.5640    1.4530 H   0  0  0  0  0  0  0  0  0  0  0  0
   -3.1210    0.1100   -1.1530 H   0  0  0  0  0  0  0  0  0  0  0  0
   -3.1210    2.3340    0.9370 H   0  0  0  0  0  0  0  0  0  0  0  0
   -2.2020    2.3160   -0.5870 H   0  0  0  0  0  0  0  0  0  0  0  0
   -3.9800    2.4020   -0.6200 H   0  0  0  0  0  0  0  0  0  0  0  0
   -4.5400   -1.0850    0.5420 H   0  0  0  0  0  0  0  0  0  0  0  0
   -4.6350    0.4270    1.4770 H   0  0  0  0  0  0  0  0  0  0  0  0
   -5.6590    1.5680   -0.4720 H   0  0  0  0  0  0  0  0  0  0  0  0
   -5.5630    0.0570   -1.4070 H   0  0  0  0  0  0  0  0  0  0  0  0
    6.3930    0.4930    0.4460 H   0  0  0  0  0  0  0  0  0  0  0  0
    5.3680   -1.7230    0.8730 H   0  0  0  0  0  0  0  0  0  0  0  0
    3.8410   -0.9290    1.3270 H   0  0  0  0  0  0  0  0  0  0  0  0
   -8.9550    0.0270   -0.0110 H   0  0  0  0  0  0  0  0  0  0  0  0
    5.2140   -0.7220   -1.3920 H   0  0  0  0  0  0  0  0  0  0  0  0
    3.2630   -2.0330   -2.1810 H   0  0  0  0  0  0  0  0  0  0  0  0
    4.1890   -2.9410   -0.9610 H   0  0  0  0  0  0  0  0  0  0  0  0
    1.7550   -3.0850   -0.5160 H   0  0  0  0  0  0  0  0  0  0  0  0
    2.5920   -2.2150    0.7920 H   0  0  0  0  0  0  0  0  0  0  0  0
    1.1020   -0.9270   -1.5430 H   0  0  0  0  0  0  0  0  0  0  0  0
    2.4940    0.2310    0.9190 H   0  0  0  0  0  0  0  0  0  0  0  0
 13  1  1  0
  1  2  1  0
  1 28  1  0
  1 29  1  0
 23  2  1  0
  2 27  1  0
  2 11  1  6
 27  3  1  0
  3  4  1  0
  3 30  1  0
  3 31  1  0
  4  5  1  0
  4 32  1  0
  4 33  1  0
  6  5  1  0
  5  9  1  0
  5 10  1  6
 26  6  1  0
  6  7  1  0
  6 34  1  1
  7  8  1  0
  7 35  1  0
  7 36  1  0
  9  8  1  0
  8 37  1  0
  8 38  1  0
  9 14  1  0
  9 39  1  1
 10 40  1  0
 10 41  1  0
 10 42  1  0
 11 43  1  0
 11 44  1  0
 11 45  1  0
 12 19  1  0
 12 46  1  0
 19 13  1  0
 13 47  1  0
 13 48  1  0
 15 14  1  0
 14 16  1  0
 14 49  1  6
 15 50  1  0
 15 51  1  0
 15 52  1  0
 17 16  1  0
 16 53  1  0
 16 54  1  0
 17 18  1  0
 17 55  1  0
 17 56  1  0
 22 18  2  0
 18 21  1  0
 19 20  1  0
 19 57  1  6
 20 23  1  0
 20 58  1  0
 20 59  1  0
 21 60  1  0
 23 24  1  0
 23 61  1  6
 24 25  1  0
 24 62  1  0
 24 63  1  0
 25 26  1  0
 25 64  1  0
 25 65  1  0
 27 26  1  0
 26 66  1  6
 27 67  1  1
M  END
$$$$
