The molecule with the SMILES representation of C=C1CC2(CCOc3ccccc32)OC1=O shows no activity against the human immunodeficiency virus.
The molecule with the {SMILES__description} {#representation of |!}{SMILES#} {#shows|exhibits|displays!} {activity_HIV#no &NULL}{activity_HIV__names__noun}.
3'-methylidenespiro[2,3-dihydrochromene-4,5'-oxolane]-2'-one