InChI=1S/C19H20ClNO9/c20-13-9(7-22)11(5-6-12(13)23)21-10-4-2-1-3-8(10)17(27)29-19-16(26)14(24)15(25)18(28)30-19/h1-6,14-16,18-19,21-26,28H,7H2