InChI=1S/C19H14O12S/c20-10-3-1-9(2-4-10)13-8-29-14-7-11(5-6-12(14)15(13)21)30-16(18(22)23)17(19(24)25)31-32(26,27)28/h1-8,16-17,20H,(H,22,23)(H,24,25)(H,26,27,28)