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