InChI=1S/C21H37N3O3/c1-18(2)16-19(21(26)27)23-20(25)12-10-8-6-4-3-5-7-9-11-14-24-15-13-22-17-24/h13,15,17-19H,3-12,14,16H2,1-2H3,(H,23,25)(H,26,27)/t19-/m0/s1