InChI=1S/C27H25ClN2O4/c1-2-3-18-27(19-34-24(31)20-14-16-21(28)17-15-20)25(32)29(22-10-6-4-7-11-22)30(26(27)33)23-12-8-5-9-13-23/h4-17H,2-3,18-19H2,1H3