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Name the molecular formula for the molecule established as 2-(methylamino)-N-[1-[(3-methylimidazol-4-yl)methyl]-2-oxo-4,5-dihydro-3H-1-benzazepin-3-yl]propanamide;hydrochloride using the IUPAC nomenclature.
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C19H26ClN5O2
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