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What is the molecular formula of the molecule identified by (6R)-7-[[2-(2-amino-1,3-thiazol-4-yl)-2-methoxyiminoacetyl]amino]-3-[2-(1-methylpyridin-1-ium-2-yl)sulfanylethenyl]-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid ?
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C21H21N6O5S3+
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