The molecule is an alpha-amino-acid cation obtained by deprotonation of the carboxy group and protonation of the amino and guanidino groups of (2S,3R)-capreomycidine. It is a conjugate acid of a (2S,3R)-capreomycidine.
(2S)-2-[(6R)-2-amino-1,4,5,6-tetrahydropyrimidin-3-ium-6-yl]-2-azaniumylacetate