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