You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(2S)-2-[[5-(3-chlorophenyl)furan-2-yl]methyl-(2,4-dichlorobenzoyl)amino]-3-phenylpropanoic acid is the IUPAC name of a molecule. Please give its molecular formula.
user
C27H20Cl3NO4
assistant