InChI=1/C21H20N4O/c1-2-26-18-10-6-5-9-16(18)19-15-8-4-3-7-14(15)17(11-22)20(25)21(19,12-23)13-24/h5-7,9-10,15,19H,2-4,8,25H2,1H3/t15-,19-/m1/s1 52B71E09806949F5