InChI=1S/C27H26O15S/c28-16-7-14(8-17(29)11-16)2-1-13-3-5-18(6-4-13)40-27-24(34)23(33)22(32)21(41-27)12-39-26(35)15-9-19(30)25(20(31)10-15)42-43(36,37)38/h1-11,21-24,27-34H,12H2,(H,36,37,38)/b2-1+