(2S,5R,6R)-3,3-dimethyl-6-{[(5-methyl-3-phenyl-1,2-oxazol-4-yl)carbonyl]amino}-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid - (3S)-3,6-diamino-N-[(3S,6Z,9S,12S,15S)-3-[(4R,6S)-2-amino-6-hydroxy-3,4,5,6-tetrahydropyrimidin-4-yl]-6-[(carbamoyla