[{"from": "human", "value": "Could you provide a description of this molecule? [C][C][=Branch1][C][=O][C][=C]"}, {"from": "gpt", "value": "The molecule is a methyl ketone that is butan-2-one with an unsaturation at position 3. It is a methyl ketone and an enone. It is functionally related to a butan-2-one and a but-1-ene."}]