You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-[[3-(oxan-4-yloxymethyl)phenyl]methyl]-3-(4,5,6,7-tetrahydro-1-benzofuran-4-yl)urea is the IUPAC name of a molecule. Please give its molecular formula.
user
C22H28N2O4
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