InChI=1S/C25H22O12S/c1-34-13-4-2-3-11(5-13)24-16(10-35-38(31,32)33)14-8-15(22(29)23(30)25(14)37-24)19-9-18(28)21-17(27)6-12(26)7-20(21)36-19/h2-8,16,19,24,26-27,29-30H,9-10H2,1H3,(H,31,32,33)