[{"from": "human", "value": "Based on the given information, design a molecule that meets the desired specifications. The molecule is a pyridinium ion obtained by protonation of the ring nitrogen of pyridoxal. It is a pyridinium ion and a vitamin B6. It is a conjugate acid of a pyridoxal."}, {"from": "gpt", "value": "[C][C][=NH1+1][C][=C][Branch1][#Branch2][C][=Branch1][Branch1][=C][Ring1][=Branch1][O][C][=O][C][O]"}]