InChI=1S/C20H22ClNO7/c1-9-12(21)3-2-4-13(9)22-14-7-10(23)5-6-11(14)15(24)8-16-17(25)18(26)19(27)20(28)29-16/h2-7,16-20,22-23,25-28H,8H2,1H3