InChI=1/C15H17N3O2/c1-8-4-9(2)6-10(5-8)13-12-11(7-16-14(12)19)18(3)15(20)17-13/h4-6,13H,7H2,1-3H3,(H,16,19)(H,17,20)/t13-/m1/s1/f/h16-17H 55B7EA2C8CD20643