[{"from": "human", "value": "Design a molecule that meets the criteria outlined in the description. The molecule is an organic cation obtained by protonation of the four amino groups of N(4)-aminopropylspermidine. It has a role as a bacterial metabolite. It is an ammonium ion derivative and an organic cation. It is a conjugate base of a N(4)-aminopropylspermidine."}, {"from": "gpt", "value": "[C][Branch1][=C][C][C][NH1+1][Branch1][Branch1][C][C][C][NH3+1][C][C][C][NH3+1][C][NH3+1]"}]