The molecule is a guanidinium ion obtained by protonation of the guanidino as well as the primary and secondary amino functions of N(1)-aminopropylagmatine; major species at pH 7.3. It is a conjugate acid of a N(1)-aminoaminopropylagmatine.
3-azaniumylpropyl-[4-(diaminomethylideneazaniumyl)butyl]azanium