You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
tert-butyl 2-[5-[1-(2-carbamoylphenoxy)ethyl]-2-fluorobenzoyl]piperazine-1-carboxylate is the IUPAC name of a molecule. Please give its molecular formula.
user
C25H30FN3O5
assistant