You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-phenyl-N-[4-[1'-(4-pyridin-4-ylpiperazine-1-carbonyl)spiro[3,5-dihydro-2H-1-benzazepine-4,3'-cyclopentene]-1-carbonyl]phenyl]benzamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C44H41N5O3
assistant