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 ethyl 2-(4-benzhydrylpiperazin-1-yl)-4-(4-fluorophenyl)-6-oxo-4,5-dihydro-1H-pyrimidine-5-carboxylate .
user
C30H31FN4O3
assistant