You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule (2R)-N-[(2S)-butan-2-yl]-2-[[2-(3-methoxy-4-nitrophenoxy)acetyl]-[(2-methylphenyl)methyl]amino]butanamide ?
user
C25H33N3O6
assistant