You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-benzyl-2-(4-ethyl-N-[2-[5-(2-fluorophenyl)tetrazol-2-yl]acetyl]anilino)butanamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C28H29FN6O2
assistant