The SMILES Cn1c2ccc(F)cc2c2ccc3c(c21)C(=O)C=CC3=O is from a molecule that exhibits 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][=C][Branch1][C][F][C][=C][Ring1][#Branch1][C][=C][C][=C][C][=Branch1][=Branch1][=C][Ring1][=Branch1][Ring1][=C][C][=Branch1][C][=O][C][=C][C][Ring1][Branch2][=O]