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 2-methylpropyl 2-[3-[[(2S)-2-amino-3-phenylpropanoyl]amino]-5-pyridin-4-ylphenyl]-2,2-difluoroacetate ?
user
C26H27F2N3O3
assistant