1-Azabicyclo(3.2.0)hept-2-ene-2-carboxylic acid, 3-(5-chloro-2-oxo-3(2H)-benzoxazolyl)-6-(1-hydroxyethyl)-4-methyl-7-oxo-, (4R-(4alpha,5beta,6beta(R*)))- 1-Hcobcc 125412-71-7 6-(1-Hydroxyethyl)-2-(5-chloro-2-oxobenzoxazolin-3-yl)-1-methyl-1-carbapen-2-em-3-carboxylic acid