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 (3S)-1-[2-[[4-[2-ethylpentyl(methyl)amino]-2-methylbutyl]-propylamino]prop-2-enyl]-3-(methylamino)azepan-2-one .
user
C26H52N4O
assistant