InChI=1S/C16H16O8S/c1-23-12-8-14(18)16(15(19)9-12)13(17)7-4-10-2-5-11(6-3-10)24-25(20,21)22/h2-3,5-6,8-9,18-19H,4,7H2,1H3,(H,20,21,22)