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system
Name the molecular formula for the molecule established as (2R)-N-methyl-2-[(4-methyl-6-oxo-1H-pyrimidin-2-yl)sulfanyl]-N-[(5-phenyl-1,2-oxazol-3-yl)methyl]propanamide using the IUPAC nomenclature.
user
C19H20N4O3S
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