InChI=1S/C17H16ClN3O2/c1-8-14(20-9(2)15(8)17(23)19-3)7-12-11-6-10(18)4-5-13(11)21-16(12)22/h4-7,20H,1-3H3,(H,19,23)(H,21,22)/b12-7-