You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(2R)-N-[(2R)-butan-2-yl]-2-[(2-chlorophenyl)methyl-[2-(4-propan-2-ylphenoxy)acetyl]amino]-3-phenylpropanamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C31H37ClN2O3
assistant