InChI=1S/C18H26O8S/c1-14(12-19)7-5-3-4-6-8-18(20)25-13-15-9-10-16(17(11-15)24-2)26-27(21,22)23/h5,7,9-11,14,19H,3-4,6,8,12-13H2,1-2H3,(H,21,22,23)/b7-5+