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system
Name the molecular formula for the molecule established as 1-[3,5-difluoro-4-[(1R,3R)-2-(2-fluoro-2-methylpropyl)-3-methyl-1,3,4,9-tetrahydropyrido[3,4-b]indol-1-yl]phenyl]-5-oxopyrrolidine-3-carboxylic acid using the IUPAC nomenclature.
user
C27H28F3N3O3
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