InChI=1S/C19H26O6S/c1-4-6-7-8-9-10-11-15-19(25-26(21,22)23)16-13-12-14-18(5-2)24-17(3)20/h5,11,15,18-19H,2,4,6-10H2,1,3H3,(H,21,22,23)/b15-11+