You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Under IUPAC nomenclature, a molecule named N-[4-(4-fluorobenzoyl)-5-phenylpyrimidin-2-yl]-2-[2-fluoro-4-(2-hydroxyethylsulfonyl)phenyl]acetamide is given. What is its corresponding molecular formula?
user
C27H21F2N3O5S
assistant