InChI=1S/C20H20Cl2N2O5/c1-11-12(2)17(29-9-3-4-18(25)26)8-7-16(11)23-20(28)24-19(27)14-6-5-13(21)10-15(14)22/h5-8,10H,3-4,9H2,1-2H3,(H,25,26)(H2,23,24,27,28)