[{"from": "human", "value": "Generate a molecule based on the given description. The molecule is an alkene that is docosane with an unsaturation at position 1. Metabolite observed in cancer metabolism. It has a role as a human metabolite."}, {"from": "gpt", "value": "[C][C][C][C][C][C][C][C][C][C][C][C][C][C][C][C][C][C][C][C][C][=C]"}]