InChI=1/C18H15ClN2O5/c1-11(17(22)20-9-8-12-4-2-3-5-16(12)20)26-18(23)14-7-6-13(21(24)25)10-15(14)19/h2-7,10-11H,8-9H2,1H3/t11-/m1/s1 9C1E753C0B1BE0C0