[4R-[3(3S*,5S*),4α,5β,6β(R*)]]-3-[[5-[(Dimethylamino)carbonyl]-3-pyrrolidinyl]thio]-6-(1-hydroxyethyl)-4-methyl-7-oxo-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylic Acid Trihydrate; (4R,5S,6S)-3-[[(3S,5S)-5-[(Dimethylamino)carbonyl]-3-pyrrolidinyl]thio]-6-[(1R)-1-hydroxyethyl]-4-methyl-7-oxo-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylic Acid Trihydrate; (4R,5S,6S)-3-[[(3S,5S)-5-[(dimethylamino)carbonyl]-3-pyrrolidinyl]thio]-6-[(1R)-1-hydroxyethyl]-4-methyl-7-oxo-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylic Acid Trihydrate

A broad spectrum antibiotic that has a high affinity for cell wall-synthesizing enzymes.  It is a beta-lactam and belongs to the subgroup of carbapenem. The spectrum of action includes many gram-positive and gram-negative bacteria (including Pseudomonas) and anaerobic bacteria. Konagaya et al. note the successful elimination of Agrobacterium from Cryptomeria japonica (Japanese cedar) cultures using a concentration of 10mg/L of Meropenem without observing phytotoxic effects.