You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
ethyl 2-[3-[2-(but-3-enylamino)-4-(methoxycarbonylamino)phenyl]-5-fluorophenyl]pent-4-enoate is the IUPAC name of a molecule. Please give its molecular formula.
user
C25H29FN2O4
assistant