[{"from": "human", "value": "Provide a brief overview of this molecule. [C][Branch1][P][C][Branch1][Branch2][C][O][N+1][=Branch1][C][=O][O-1][O][N+1][=Branch1][C][=O][O-1][O][N+1][=Branch1][C][=O][O-1]"}, {"from": "gpt", "value": "The molecule is a nitroglycerol that is glycerol in which the hydrogen atoms of all three hydroxy groups are replaced by nitro groups. It acts as a prodrug, releasing nitric oxide to open blood vessels and so alleviate heart pain. It has a role as a vasodilator agent, a nitric oxide donor, an explosive, a prodrug, a tocolytic agent, a muscle relaxant and a xenobiotic."}]