InChI=1S/C20H22O12S/c21-8-20(25)9-29-19(18(20)24)30-12-5-14(22)13-7-15(23)17(31-16(13)6-12)10-1-3-11(4-2-10)32-33(26,27)28/h1-6,15,17-19,21-25H,7-9H2,(H,26,27,28)