InChI=1S/C19H22O7S/c1-14(2)4-3-5-15(13-25-27(21,22)23)10-11-24-17-8-6-16-7-9-19(20)26-18(16)12-17/h4,6-10,12H,3,5,11,13H2,1-2H3,(H,21,22,23)/b15-10-