InChI=1/C20H31N5O/c26-20(25-13-16-9-14-8-15(10-16)12-17(25)11-14)21-6-5-19-23-22-18-4-2-1-3-7-24(18)19/h14-17H,1-13H2,(H,21,26)/t14-,15+,16?,17?/f/h21H 3C22BCFEDD1EDE2C