InChI=1S/C32H36O16P4/c33-29-21-1-17(13-49(37,38)39)2-22(29)10-24-5-19(15-51(43,44)45)6-27(31(24)35)12-28-8-20(16-52(46,47)48)7-26(32(28)36)11-25-4-18(14-50(40,41)42)3-23(9-21)30(25)34/h1-8,33-36H,9-16H2,(H2,37,38,39)(H2,40,41,42)(H2,43,44,45)(H2,46,47,48) p-Methylphosphonatocalix[4]arene Oc1c2Cc3cc(C[P](O)(O)=O)cc(Cc4cc(C[P](O)(O)=O)cc(Cc5cc(C[P](O)(O)=O)cc(Cc1cc(C[P](O)(O)=O)c2)c5O)c4O)c3O Oc1c2Cc3cc(C[P](O)(O)=O)cc(Cc4cc(C[P](O)(O)=O)cc(Cc5cc(C[P](O)(O)=O)cc(Cc1cc(C[P](O)(O)=O)c2)c5O)c4O)c3O