InChI=1S/C17H22O6S/c1-2-16(18)12-9-10-14-17(19)13-8-6-4-3-5-7-11-15-23-24(20,21)22/h2,8-9,12-13H,1,3-7,11,15H2,(H,20,21,22)/b12-9+,13-8+