InChI=1S/C23H19F2N3/c1-15(22(16-8-4-2-5-9-16)17-10-6-3-7-11-17)28-23-18-12-19(24)20(25)13-21(18)26-14-27-23/h2-15,22H,1H3,(H,26,27,28)/t15-/m0/s1