[{"from": "human", "value": "Create a molecule that satisfies the conditions outlined in the description. The molecule is a N-alkylpiperazine that is piperazine substituted by a methyl and a 2-aminoethyl group at the N atoms respectively. It has a role as a human metabolite."}, {"from": "gpt", "value": "[C][N][C][C][N][Branch1][Branch1][C][C][Ring1][=Branch1][C][C][N]"}]