InChI=1S/C21H37N3O2/c1-2-3-4-11-20(25)16-18-9-7-10-19-17-21(26)23-14-6-5-12-22-13-8-15-24(18)19/h7,9,18-19,22H,2-6,8,10-17H2,1H3,(H,23,26)/t18-,19+/m0/s1