The SMILES Cn1ccc2nc(O)nc(S)c21 is from a molecule that shows no activity against HIV.
The {SMILES__description} {SMILES#} {#represents|is from!} a molecule that {#shows|exhibits|displays!} {activity_HIV#no &NULL}{activity_HIV__names__noun}.
[C][N][C][=C][C][=N][C][Branch1][C][O][=N][C][Branch1][C][S][=C][Ring1][Branch2][Ring1][O]