InChI=1/C18H21N5O/c1-12(2)23-13(3)20-11-17(23)16-9-10-19-18(22-16)21-14-5-7-15(24-4)8-6-14/h5-12H,1-4H3,(H,19,21,22)/f/h21H 37B7D51D068AC1FB