InChI=1S/C50H38O21/c51-18-5-28(54)25-13-35(61)48(69-37(25)8-18)23-11-33(59)45(65)41-21(23)1-16(3-31(57)43(41)63)47-40(15-27-30(56)7-20(53)10-39(27)68-47)71-50(67)17-2-22-24(12-34(60)46(66)42(22)44(64)32(58)4-17)49-36(62)14-26-29(55)6-19(52)9-38(26)70-49/h1-12,35-36,40,47-49,51-56,59-62,65-66H,13-15H2,(H,57,63)(H,58,64)