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