InChI=1S/C25H20O12S/c1-34-21-6-11(2-3-19(21)37-38(31,32)33)24-15(10-26)14-4-12(5-18(30)25(14)36-24)20-9-17(29)23-16(28)7-13(27)8-22(23)35-20/h2-8,10,15,20,24,27-28,30H,9H2,1H3,(H,31,32,33)