The SMILES O=C1NC(=O)c2ncccc21 represents a molecule that displays no activity against the human immunodeficiency virus.
The {SMILES__description} {SMILES#} {#represents|is from!} a molecule that {#shows|exhibits|displays!} {activity_HIV#no &NULL}{activity_HIV__names__noun}.
[O][=C][N][C][=Branch1][C][=O][C][=N][C][=C][C][=C][Ring1][=Branch1][Ring1][#Branch2]