[{"from": "human", "value": "Provide a description of this molecule. [NH4+1]"}, {"from": "gpt", "value": "The molecule is an onium cation obtained by protonation of ammonia. It has a role as a human metabolite, a Saccharomyces cerevisiae metabolite, an Escherichia coli metabolite and a cofactor. It is a nitrogen hydride, an onium cation and a monovalent inorganic cation. It is a conjugate acid of an ammonia."}]