[{"from": "human", "value": "Based on the given information, design a molecule that meets the desired specifications. The molecule is a nitroalkene that is 1-undecene substituted by a nitro group at position 11. 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][N+1][=Branch1][C][=O][O-1]"}]