The SMILES CN1C2=C(CC3=C1CC(C)(C)CC3=O)C(=O)CC(C)(C)C2 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}.