InChI=1S/C21H30O5S/c1-2-12-20-21(25-20)16-10-8-6-4-3-5-7-9-13-18-14-11-15-19(17-18)26-27(22,23)24/h2,8,10-11,14-15,17,20-21H,1,3-7,9,12-13,16H2,(H,22,23,24)/b10-8+