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