The SMILES C[Si](C)(C)OC1(C#N)C2C3CC4C2C(=O)C2C4C3C21 is from a molecule that shows 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}.