InChI=1S/C17H18O10S/c1-25-7-9-3-2-8(4-13(9)27-28(22,23)24)17-12(19)5-10-14(26-17)6-11(18)16(21)15(10)20/h2-4,6,12,17-21H,5,7H2,1H3,(H,22,23,24)