InChI=1/C18H17N3O2/c22-17-14-8-4-5-12-9-10-21(15(11-19-17)16(12)14)18(23)20-13-6-2-1-3-7-13/h1-8,15H,9-11H2,(H,19,22)(H,20,23)/t15-/m0/s1/f/h19-20H B0E2F0FF25D3D30E