You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[(6S)-6-(1-benzofuran-4-ylmethyl)-1,4-oxazepan-4-yl]-[3-[(4,6-dimethylpyrimidin-2-yl)amino]phenyl]methanone The above is the IUPAC name of a molecule. Write its molecular formula.
user
C27H28N4O3
assistant