[{"from": "human", "value": "Synthesize a molecule that matches the given characteristics. The molecule is a nitrite ester having isopentyl as the alkyl group. It has a role as a vasodilator agent and an antihypertensive agent. It is functionally related to an isoamylol."}, {"from": "gpt", "value": "[C][C][Branch1][C][C][C][C][O][N][=O]"}]