002943: InChI=1.12Beta/C20H17N5O/c26-20(21-16-10-4-1-5-11-16)19(24-22-17-12-6-2-7-13-17)25-23-18-14-8-3-9-15-18/h1-15H,22H,(H,21,26)/b24-19+,25-23+