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