[{"from": "human", "value": "Describe this molecule. [C][C][Branch1][C][C][Branch1][C][C][C][=O]"}, {"from": "gpt", "value": "The molecule is a member of the class of propanals that is propanal substituted by two methyl groups at position 2. It is a member of propanals and a 2-methyl-branched fatty aldehyde."}]