InChI=1S/C20H16ClN3O2/c1-11-18-14-4-2-3-5-15(14)19(12-6-8-13(21)9-7-12)23-16(10-17(22)25)20(18)26-24-11/h2-9,16H,10H2,1H3,(H2,22,25)/t16-/m0/s1