InChI=1/C25H20O4S2/c1-30-20-12-8-18(9-13-20)23-16-22(17-6-4-3-5-7-17)24(25(26)29-23)19-10-14-21(15-11-19)31(2,27)28/h3-16H,1-2H3 73F9F5826F32EE59