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system
Name the molecular formula for the molecule established as (2S)-2-[(1,1-dioxo-1,2-benzothiazol-3-ylidene)amino]-N-[3-methoxy-4-(2-oxopyrrolidin-1-yl)phenyl]propanamide using the IUPAC nomenclature.
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C21H22N4O5S
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