You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named tert-butyl N-[3-[2-[[4-[[2-[6-[carbamoyl(ethyl)amino]-6-oxohexoxy]-4-methylphenyl]-methylcarbamoyl]-2-methoxyphenyl]carbamoyl]phenoxy]propyl]carbamate by IUPAC nomenclature, provide its molecular formula.
user
C40H53N5O9
assistant