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system
Name the molecular formula for the molecule established as N-[(1S)-3-[5-(2-chloro-6-fluorobenzoyl)-1,3,6,6a-tetrahydropyrrolo[3,4-c]pyrrol-2-yl]-1-phenylpropyl]-3-(1H-1,2,4-triazol-5-yl)propanamide using the IUPAC nomenclature.
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C27H28ClFN6O2
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