InChI=1/C18H17N5/c1-13(21-17-8-7-14-9-11-19-18(14)22-17)15-5-2-3-6-16(15)23-12-4-10-20-23/h2-13H,1H3,(H2,19,21,22)/t13-/m0/s1/f/h19,21H 3BC32CA2EDBCEE99