The SMILES C[Si](C)(C)c1ccc(CC2(Cc3ccc([Si](C)(C)C)cc3)CCNC2)cc1 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}.