InChI=1S/C18H21N5O/c1-3-7-13(8-4-1)11-24-17-15-16(20-12-19-15)22-18(23-17)21-14-9-5-2-6-10-14/h2,5-6,9-10,12-13H,1,3-4,7-8,11H2,(H2,19,20,21,22,23)