InChI=1S/C17H14O10S/c1-25-12-5-10(19)6-13-14(12)15(20)16(21)17(26-13)8-2-3-9(7-18)11(4-8)27-28(22,23)24/h2-6,18-19,21H,7H2,1H3,(H,22,23,24)