You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
3-O-benzyl 1-O-ethyl 2-[[1-[(2-methylpropan-2-yl)oxycarbonyl]piperidin-4-yl]amino]propanedioate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C22H32N2O6
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