You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named N-(furan-2-ylmethyl)-N-methyl-2-[3-(3-nitrophenyl)-1,2,4-triazol-1-yl]acetamide by IUPAC nomenclature, provide its molecular formula.
user
C16H15N5O4
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