InChI=1S/C19H19ClO8/c1-2-3-4-5-6-7-8-9-11-16(26-11)12(10-20)27-19-15(23)13(21)14(22)17(28-19)18(24)25/h2-3,11-17,19,21-23H,10H2,1H3,(H,24,25)/b3-2-