InChI=1S/C22H20Cl2N2O3/c1-12-5-7-15(8-6-12)18(27)11-29-22-19(14(3)25-26(22)4)21(28)16-9-10-17(23)13(2)20(16)24/h5-10H,11H2,1-4H3