[{"from": "human", "value": "Synthesize a molecule that matches the given characteristics. The molecule is an organosulfonic acid that is propane-1-sulfonic acid substituted by an acetylamino group at position 3. It has a role as a neurotransmitter agent, an environmental contaminant and a xenobiotic. It is an organosulfonic acid and a member of acetamides."}, {"from": "gpt", "value": "[C][C][=Branch1][C][=O][N][C][C][C][S][=Branch1][C][=O][=Branch1][C][=O][O]"}]