InChI=1S/C21H30O5S/c1-2-3-16-21(26-27(23,24)25)17-11-9-7-5-4-6-8-10-13-19-14-12-15-20(22)18-19/h2-3,9,11-12,14-16,18,21-22H,1,4-8,10,13,17H2,(H,23,24,25)/b11-9+,16-3?