The molecule SMILES O=C1NC(=O)c2ncccc21 is not active against HIV.
The {#molecule |!}{SMILES__description} {SMILES#} is {activity_HIV#not &NULL}{activity_HIV__names__adjective}.
[O][=C][N][C][=Branch1][C][=O][C][=N][C][=C][C][=C][Ring1][=Branch1][Ring1][#Branch2]