You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance 5-[(2-chloro-4-fluorophenoxy)methyl]-N-[1,3-dihydroxy-1-(4-nitrophenyl)propan-2-yl]furan-2-carboxamide .
user
C21H18ClFN2O7
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