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system
Name the molecular formula for the molecule established as N-[4-[2-[(3aS,8aR)-2,3,3a,4,5,7,8,8a-octahydro-1H-pyrrolo[3,4-d]azepin-6-yl]-2-oxoethyl]phenyl]acetamide;hydrochloride using the IUPAC nomenclature.
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C18H26ClN3O2
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