InChI=1S/C21H24O10S/c1-29-20-9-13(4-7-17(20)24)3-6-15(22)11-16(23)12-18(25)14-5-8-19(21(10-14)30-2)31-32(26,27)28/h4-5,7-10,18,24-25H,3,6,11-12H2,1-2H3,(H,26,27,28)