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 (2R)-N-[(2R)-butan-2-yl]-2-[[2-(4-tert-butylphenoxy)acetyl]-[(4-methoxyphenyl)methyl]amino]propanamide .
user
C27H38N2O4
assistant