[{"from": "human", "value": "Use the given information to create a molecule that fulfills the desired purpose. The molecule appears as a colorless liquid with a faint fishlike odor. Combustible but difficult to ignite. Corrosive to tissue. Combustion produces toxic oxides of nitrogen."}, {"from": "gpt", "value": "[C][Branch1][=Branch1][C][O][C][C][O][N]"}]