InChI=1/C14H21N3O3/c1-8(11-9(2)17-20-10(11)3)12(18)16-14(13(15)19)6-4-5-7-14/h8H,4-7H2,1-3H3,(H2,15,19)(H,16,18)/t8-/m1/s1/f/h16H,15H2 2283E9F4606ACB6A