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Under IUPAC nomenclature, a molecule named 1-[(2-isocyanophenyl)methyl]-N-[(6S)-4-methyl-5-oxo-7,8-dihydro-6H-pyrazolo[1,5-a][1,3]diazepin-6-yl]-1,2,4-triazole-3-carboxamide is given. What is its corresponding molecular formula?
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C19H18N8O2
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