[{"from": "human", "value": "Based on the given information, design a molecule that meets the desired specifications. The molecule is a primary aliphatic ammonium ion that is the conjugate acid of 2-methylpropanamine. It is a conjugate acid of a 2-methylpropanamine."}, {"from": "gpt", "value": "[C][C][Branch1][C][C][C][NH3+1]"}]