You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Under IUPAC nomenclature, a molecule named N-[(1S,2S)-1-morpholin-4-yl-1-phenylpropan-2-yl]-2-piperidin-1-ylacetamide is given. What is its corresponding molecular formula?
user
C20H31N3O2
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