4-Thia-1-azabicyclo[3.2.0]heptane-2-carboxylicacid,6-[[(2R)-aminophenylacetyl]amino]-3,3-dimethyl-7-oxo-,[[[(2S,6R)-3,3-dimethyl-4,4-dioxido-7-oxo-4-thia-1-azabicyclo[3.2.0]hept-2-yl]carbonyl]oxy]methylester,(2S,5R,6R)-,(4-methylbenzenesulfonate)(1:1)
$12.23