You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance tert-butyl N-[1-[ethyl-[1-(3-methylphenyl)-2-oxo-2-(pentan-2-ylamino)ethyl]amino]-3-methyl-1-oxobutan-2-yl]carbamate .
user
C26H43N3O4
assistant