5,11,17,23,29,35-Hexatert-butyl-48-hydroxyselanyl-49,50,51,52-tetrakis(phenylmethoxy)-38,46-dioxanonacyclo[17.17.11.13,7.19,13.121,25.127,31.140,44.015,47.033,37]dopentaconta-1(36),3(52),4,6,9,11,13(51),15,17,19(47),21(50),22,24,27,29,31(49),33(37),34,40(48),41,43-henicosaene | 200066-78-0