InChI=1S/C21H30O5S/c1-2-3-9-16-21(26-27(23,24)25)17-11-8-6-4-5-7-10-13-19-14-12-15-20(22)18-19/h2,9,11-12,14-18,21-22H,1,3-8,10,13H2,(H,23,24,25)/b16-9+,17-11+