InChI=1S/C19H19ClO8/c1-11-13(26-11)9-7-5-3-2-4-6-8-12(10-20)27-19-16(23)14(21)15(22)17(28-19)18(24)25/h6,8,11-17,19,21-23H,10H2,1H3,(H,24,25)/b8-6+