[{"from": "human", "value": "Provide a description of this molecule. [C][C][=Branch1][C][=O][N][C][=C][Branch1][P][C][=C][C][=Branch1][Ring2][=C][Ring1][=Branch1][As][=Branch1][C][=O][Branch1][C][O][O][O]"}, {"from": "gpt", "value": "The molecule is a pentavalent arsenical compound with antiprotozoal and antihelmintic properties. Although its mechanism of action is not fully known, acetarsone may bind to protein-containing sulfhydryl groups located in the parasite, thereby forming lethal As-S bonds. This may prevent their functioning and eventually kill the parasite."}]