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What is the molecular formula of the molecule identified by (6S,7S)-7-[[2-(4-carbamoyloxyphenyl)-2-carboxyacetyl]amino]-7-methoxy-3-[(1-methyltetrazol-5-yl)sulfanylmethyl]-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid ?
user
C21H21N7O9S2
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