InChI=1S/C29H20O12S/c30-15-5-1-13(2-6-15)25-26(40-25)19-9-16(31)11-21-23(19)29(28(34)39-21)24-20(33)10-17(32)12-22(24)38-27(29)14-3-7-18(8-4-14)41-42(35,36)37/h1-12,25-27,30-33H,(H,35,36,37)