You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(2R)-2-[3-benzylsulfanylpropanoyl-[(2,4-dichlorophenyl)methyl]amino]-N-propan-2-ylpropanamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C23H28Cl2N2O2S
assistant