Based on the SMILES representation O=C1OCC2C(=O)OCC12, the molecule exhibits 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}.
1,3a,4,6a-tetrahydrofuro[3,4-c]furan-3,6-dione