[{"from": "human", "value": "Synthesize a molecule that matches the given characteristics. The molecule is a primary aliphatic amine that is ethylamine substituted by two methyl groups at position 1. It is a conjugate base of a tert-butylammonium."}, {"from": "gpt", "value": "[C][C][Branch1][C][C][Branch1][C][C][N]"}]