[{"from": "human", "value": "What can you tell me about this molecule? [C][=C][Branch1][=C][N][=C][Branch1][Ring2][S][Ring1][Branch1][N][=C][Branch1][C][N][N][C][S][C][C][/C][=Branch1][#Branch2][=N][/S][=Branch1][C][=O][=Branch1][C][=O][N][/N]"}, {"from": "gpt", "value": "The molecule is a Histamine-2 Receptor Antagonist. The mechanism of action of famotidine is as a Histamine H2 Receptor Antagonist."}]