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system
Provide the molecular formula for the IUPAC named substance N-[2-(2,5-dimethylphenoxy)ethyl]-N-methyl-3-(5,6,7,8-tetrahydro-4H-pyrazolo[1,5-a][1,4]diazepin-2-yl)propanamide .
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C21H30N4O2
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