Based on the SMILES C[Si](C)(C)OC=C1CCOC1=O, the molecule displays no activity against the human immunodeficiency virus.
Based on the {SMILES__description} {#representation |!}{SMILES#}, the molecule {#shows|exhibits|displays!} {activity_HIV#no &NULL}{activity_HIV__names__noun}.
[C][Si][Branch1][C][C][Branch1][C][C][O][C][=C][C][C][O][C][Ring1][Branch1][=O]