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system
Provide the molecular formula for the IUPAC named substance (6S)-3-[(E)-3-(4-aminopyridin-1-ium-1-yl)prop-1-enyl]-7-[[(2Z)-2-(2-amino-1,3-thiazol-4-yl)-2-methoxyiminoacetyl]amino]-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate .
user
C21H21N7O5S2
assistant