InChI=1S/C18H26O8S/c1-12(2)18-15(25-18)6-4-5-7-17(19)24-11-13-8-9-14(16(10-13)23-3)26-27(20,21)22/h8-10,12,15,18H,4-7,11H2,1-3H3,(H,20,21,22)