You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(2R)-2-[[2-(3-chlorophenoxy)acetyl]-[(2-fluorophenyl)methyl]amino]-3-phenyl-N-propan-2-ylpropanamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C27H28ClFN2O3
assistant