InChI=1S/C16H16O10S/c1-25-16-13(19)11(12(18)14(20)15(16)21)10(17)7-4-8-2-5-9(6-3-8)26-27(22,23)24/h2-3,5-6,18-21H,4,7H2,1H3,(H,22,23,24)