[{"from": "human", "value": "Create a molecule with the structure as the one described. The molecule is a one-carbon compound consisting of a methine group triple bonded to a nitrogen atom It has a role as a human metabolite, an Escherichia coli metabolite and a poison. It is a hydracid and a one-carbon compound. It is a conjugate acid of a cyanide. It is a tautomer of a hydrogen isocyanide."}, {"from": "gpt", "value": "[C][#N]"}]