InChI=1/C21H21N3O2/c1-13-9-10-16(11-14(13)2)24-12-17-18(20(24)25)19(22-21(26)23(17)3)15-7-5-4-6-8-15/h4-11,19H,12H2,1-3H3,(H,22,26)/t19-/m1/s1/f/h22H 1FC398FD6DE456C5