You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name (4R)-3-[5-(1,3-dioxolan-2-yl)-6,7-difluoro-1,2-benzoxazol-3-yl]-4-[(1S)-1-(oxan-2-yloxy)ethyl]-1,3-oxazolidin-2-one into its molecular formula.
user
C20H22F2N2O7
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