C[C@]1(c2cc(N)ccc2F)N=C(N)CO[C@@H]1F mol19803 0_1 C[C@]1(c2cc([NH3+])ccc2F)N=C(N)CO[C@@H]1F mol19803 1_1 C[C@]1(c2cc(N)ccc2F)[NH+]=C(N)CO[C@@H]1F mol19803 1_2