[{"from": "human", "value": "Generate a molecule based on this description. The molecule is a Histamine-1 Receptor Antagonist. The mechanism of action of chlorpheniramine is as a Histamine H1 Receptor Antagonist."}, {"from": "gpt", "value": "[C][N][Branch1][C][C][C][C][C][Branch1][N][C][=C][C][=C][Branch1][Branch1][C][=C][Ring1][=Branch1][Cl][C][=C][C][=C][C][=N][Ring1][=Branch1]"}]