Similar names: 4-Thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid, 3,3-dimethyl-7-oxo-6-[(phenylacetyl)amino]-[2S-(2α,5α,6β)]-, compd. with N,N'-bis(phenylmethyl)-1,2-ethanediamine (2:1), tetrahydrate; 1,2-Ethanediamine, N,N'-bis(phenylmethyl)-, bis[(2S,5R,6R)-3,3-dimethyl-7-oxo-6-[(phenylacetyl)amino]-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylate], tetrahydrate (9CI); 1,2-Ethanediamine, N,N'-bis(phenylmethyl)-, bis[[2S-(2α,5α,6β)]-3,3-dimethyl-7-oxo-6-[(phenylacetyl)amino]-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylate], tetrahydrate