InChI=1S/C25H23ClN2O7/c1-25(2,35-20-9-7-19(26)8-10-20)24(31)34-21(15-32-22(29)17-5-3-11-27-13-17)16-33-23(30)18-6-4-12-28-14-18/h3-14,21H,15-16H2,1-2H3