InChI=1S/C21H22ClNO8/c1-19(29)8-7-20(30)17(23(2)3)11(25)6-12(26)21(20,31)18(28)13(8)16(27)14-10(24)5-4-9(22)15(14)19/h4-5,8,17,24,28-31H,6-7H2,1-3H3/t8?,17?,19-,20?,21+/m0/s1