You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the molecule identified by 4-[4-[[3-[(1R,4R)-5-ethyl-2,5-diazabicyclo[2.2.1]heptane-2-carbonyl]phenyl]methoxy]phenyl]butan-2-one ?
user
C25H30N2O3
assistant