You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[(1R)-1-(2,5-dimethylfuran-3-yl)ethyl]-4-[(S)-hydroxy(phenyl)methyl]piperidine-1-carboxamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C21H28N2O3
assistant