InChI=1S/C17H26O6S/c1-3-5-6-7-8-12-15-17(22-15)16(23-24(19,20)21)13-10-9-11-14(18)4-2/h4,9,11,14-18H,2-3,5-8,12H2,1H3,(H,19,20,21)/b11-9+