You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Under IUPAC nomenclature, a molecule named 3-(4-fluorophenyl)-1-[(4-methoxyphenyl)methyl]-7-[(1S)-1-phenylethyl]purine-2,6-dione is given. What is its corresponding molecular formula?
user
C27H23FN4O3
assistant