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What is the molecular formula of the molecule (6R,7R)-7-[[(2Z)-2-(2-amino-5-chloro-1,3-thiazol-4-yl)-2-[(1S)-1-carboxyethoxy]iminoacetyl]amino]-3-[(3-methoxypyridin-1-ium-1-yl)methyl]-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate ?
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C22H21ClN6O8S2
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