InChI=1S/C21H22O12S/c1-29-11-4-2-10(3-5-11)16-8-14(23)18-13(22)6-12(7-17(18)32-16)31-21-20(33-34(26,27)28)19(25)15(24)9-30-21/h2-7,15-16,19-22,24-25H,8-9H2,1H3,(H,26,27,28)