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system
Name the molecular formula for the molecule established as [(2R)-1-(2,2-dimethyl-3-oxo-4H-quinoxalin-1-yl)-1-oxopropan-2-yl] 4-acetyl-1-methylpyrrole-2-carboxylate using the IUPAC nomenclature.
user
C21H23N3O5
assistant