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 tert-butyl N-[4-amino-1-[butan-2-yl-[2-(tert-butylamino)-1-(3,4-dimethylphenyl)-2-oxoethyl]amino]-1,4-dioxobutan-2-yl]carbamate .
user
C27H44N4O5
assistant