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system
Name the molecular formula for the molecule established as 3-[3-[(1R)-1-methyl-3,4-dihydro-1H-pyrrolo[1,2-a]pyrazin-2-yl]-3-oxopropyl]-1,3-benzoxazol-2-one using the IUPAC nomenclature.
user
C18H19N3O3
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