InChI=1S/C18H36O8S/c19-15-11-7-2-1-4-8-12-16(20)17(26-27(23,24)25)13-9-5-3-6-10-14-18(21)22/h16-17,19-20H,1-15H2,(H,21,22)(H,23,24,25)