You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule N-benzyl-N-[2-[naphthalen-2-ylmethyl-[2-[naphthalen-2-ylmethyl-(2-oxo-2-piperazin-1-ylethyl)amino]-2-oxoethyl]amino]-2-oxoethyl]propanamide .
user
C42H45N5O4
assistant