InChI=1S/C21H17ClN4O/c22-17-8-4-7-15(9-17)18-13-25-26-20(18)16-10-19(23-12-16)21(27)24-11-14-5-2-1-3-6-14/h1-10,12-13,23H,11H2,(H,24,27)(H,25,26)