InChI=1S/C51H46O21/c52-21-3-1-2-18(12-21)44-31(59)17-26-38(60)36(34-24-8-6-22(53)15-32(24)68-45(39(34)61)19-4-10-27(55)29(57)13-19)48(71-51-43(65)41(63)42(64)49(72-51)50(66)67)37(47(26)70-44)35-25-9-7-23(54)16-33(25)69-46(40(35)62)20-5-11-28(56)30(58)14-20/h1-16,31,34-35,39-46,49,51-65H,17H2,(H,66,67)