InChI=1S/C17H24O6S/c1-2-17(23-24(20,21)22)14-10-9-13-16(19)12-8-6-4-3-5-7-11-15-18/h2,8,12,16-19H,1,3-7,11,15H2,(H,20,21,22)/b12-8-