You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2,3,4,5-tetrachloro-6-[[3-[2-[[3-ethoxycarbonyl-6-[(2-methylpropan-2-yl)oxycarbonyl]-5,7-dihydro-4H-thieno[2,3-c]pyridin-2-yl]amino]-2-oxoethyl]sulfanylphenyl]carbamoyl]benzoic acid is the IUPAC name of a molecule. Please give its molecular formula.
user
C31H29Cl4N3O8S2
assistant