[{"from": "human", "value": "Based on the given information, design a molecule that meets the desired specifications. The molecule is a 2-methylpyrrolidine that has (R)-configuration. It is a conjugate base of a (R)-2-methylpyrrolidinium."}, {"from": "gpt", "value": "[C][C@@H1][C][C][C][N][Ring1][Branch1]"}]