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system
Name the molecular formula for the molecule established as N-(2-methoxyethyl)-2-[2-[(2-methoxyphenyl)methyl]-1,3,4,5-tetrahydropyrrolo[1,2-a][1,4]diazepin-4-yl]acetamide using the IUPAC nomenclature.
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C21H29N3O3
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