You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-(3-bromophenyl)-N-[[3-[3-[4-(3-piperidin-4-ylpropyl)piperidine-1-carbonyl]phenyl]phenyl]methyl]-N-(2-pyridin-4-ylethyl)acetamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C42H49BrN4O2
assistant