You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance 4-bromo-N-[3-(5-ethyl-1,3-benzoxazol-2-yl)phenyl]-3-methoxynaphthalene-2-carboxamide .
user
C27H21BrN2O3
assistant