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