InChI=1S/C20H40O5S/c1-2-3-4-11-14-17-20(25-26(22,23)24)18-15-12-9-7-5-6-8-10-13-16-19-21/h15,18,20-21H,2-14,16-17,19H2,1H3,(H,22,23,24)/b18-15+