InChI=1/C16H19N5O2/c1-8-6-9(2)14-13(7-8)10(3)17-15(20-14)21-16(18-11(4)22)19-12(5)23/h6-7H,1-5H3,(H2,17,18,19,20,21,22,23)/f/h18,22H/b18-11-,19-16? 6613DDCF54902441