InChI=1S/C27H22O15S/c28-17-5-1-15(10-19(17)30)12-24(27(35)36)41-25(32)8-4-14-3-7-21(20(31)9-14)40-23(26(33)34)13-16-2-6-18(29)22(11-16)42-43(37,38)39/h1-11,13,24,28-31H,12H2,(H,33,34)(H,35,36)(H,37,38,39)/b8-4+,23-13-