[{"from": "human", "value": "Describe this molecule. [C][C][C][Branch1][C][C][C][=O]"}, {"from": "gpt", "value": "The molecule is a methylbutanal in which the methyl substituent is at position 2. It has a role as a volatile oil component, a plant metabolite and a Saccharomyces cerevisiae metabolite. It is a 2-methyl-branched fatty aldehyde and a methylbutanal."}]