[{"from": "human", "value": "Provide a description of this molecule. [C][=C][C][=C][C][=C][C][=N][Ring1][=Branch1]"}, {"from": "gpt", "value": "The molecule is a colorless to light yellow liquid that consists of a mixture of isomers. Insoluble in water and less dense than water. Floats on water. Contact irritates skin, eyes, and mucous membranes. Toxic by ingestion."}]