The molecule is a benzathine(2+) salt in which the counter anions are benzylpenicillin(1-). Drug-of-choice when prolonged low concentrations of benzylpenicillin are required and appropriate. It contains a benzylpenicillin(1-).
benzyl-[2-(benzylazaniumyl)ethyl]azanium;(2S,5R,6R)-3,3-dimethyl-7-oxo-6-[(2-phenylacetyl)amino]-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylate