InChI=1S/C21H22ClNO8/c1-23(2)17-9-5-8-14(19(29)21(9,31)13(27)6-12(17)26)18(28)15-11(25)4-3-10(22)16(15)20(8,30)7-24/h3-4,8-9,14,17,24-25,30-31H,5-7H2,1-2H3/t8?,9?,14?,17?,20-,21+/m0/s1