[{"from": "human", "value": "Could you provide a description of this molecule? [C][=C][O][C][=C][Ring1][Branch1]"}, {"from": "gpt", "value": "The molecule is a monocyclic heteroarene with a structure consisting of a 5-membered ring containing four carbons and one oxygen, with formula C4H4O. It is a toxic, flammable, low-boiling (31\u2103) colourless liquid. It has a role as a carcinogenic agent, a hepatotoxic agent and a Maillard reaction product. It is a mancude organic heteromonocyclic parent, a member of furans and a monocyclic heteroarene."}]