InChI=1S/C17H16O10S/c1-25-17-14(20)13(19)11-12(18)9(7-26-16(11)15(17)21)6-8-2-4-10(5-3-8)27-28(22,23)24/h2-5,9,19-21H,6-7H2,1H3,(H,22,23,24)