InChI=1S/C19H22O7S/c20-16-8-4-14(5-9-16)6-10-17(21)13-18(22)11-7-15-2-1-3-19(12-15)26-27(23,24)25/h1-5,8-9,12,17,20-21H,6-7,10-11,13H2,(H,23,24,25)