You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule 2-[[3-[2-[[4-(3,4-dichlorophenyl)-1,3-thiazol-2-yl]amino]-2-oxo-1-phenylethyl]sulfanylphenyl]carbamoyl]benzoic acid into molecular formula.
user
C31H21Cl2N3O4S2
assistant