You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule 1-(3,4-dimethylphenyl)sulfonyl-N-[2-[(2-fluorobenzoyl)amino]ethyl]piperidine-4-carboxamide into molecular formula.
user
C23H28FN3O4S
assistant