[{"from": "human", "value": "What can you tell me about this molecule? [C][C][=C][Branch1][=C][C][=C][Branch1][Branch2][C][=Branch1][C][=O][N][Ring1][#Branch1][C][#N][C][=C][C][=N][C][=C][Ring1][=Branch1]"}, {"from": "gpt", "value": "The molecule is a Phosphodiesterase 3 Inhibitor. The mechanism of action of milrinone is as a Phosphodiesterase 3 Inhibitor."}]