InChI=1/C20H23N5O2/c26-19(23-16-1-3-17(4-2-16)25-21-5-6-22-25)20(27)24-12-15-8-13-7-14(9-15)11-18(24)10-13/h1-6,13-15,18H,7-12H2,(H,23,26)/t13-,14+,15?,18?/f/h23H 7863FDA4CCA56F7F