InChI=1/C16H21N3O2/c1-9-3-5-12(10(2)7-9)17-11-4-6-13-14(8-11)19-16(21)15(20)18-13/h4,6,8-10,12,17H,3,5,7H2,1-2H3,(H,18,20)(H,19,21)/t9-,10+,12-/m0/s1/f/h18-19H 5B27DCE4D614ED4A