[{"from": "human", "value": "Create a molecule that satisfies the conditions outlined in the description. The molecule appears as a clear colorless to dark liquid with an aromatic odor. Vapors heavier than air and irritating to the eyes and mucous membranes. Subject to polymerization. If the polymerization takes place inside a closed container, the container may rupture violently. Less dense than water and insoluble in water. Used to make plastics, paints, and synthetic rubber."}, {"from": "gpt", "value": "[C][=C][C][=C][C][=C][C][=C][Ring1][=Branch1]"}]