3,3-Dimethyl-6-{[(8-methyl-1,3,4,5-tetrahydro-2-benzoxepin-1-yl)carbonyl]amino}-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid AIDS-159078 AIDS159078 NSC686366 (SODIUM SALT)