InChI=1/C20H21N3O2/c1-15-12-23(13-18(24-15)16-8-4-2-5-9-16)14-19-21-22-20(25-19)17-10-6-3-7-11-17/h2-11,15,18H,12-14H2,1H3/t15-,18+/m0/s1 FCAEE635F6141A02