You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Name the molecular formula for the molecule established as 1-(5-fluoro-2-methylphenyl)sulfinyl-N-[(2-methoxyphenyl)methyl]piperidine-3-carboxamide using the IUPAC nomenclature.
user
C21H25FN2O3S
assistant