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