You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[2-ethoxy-6-iodo-4-[(Z)-[3-[(4-nitrophenyl)methyl]-2,4-dioxo-1,3-thiazolidin-5-ylidene]methyl]phenyl] 4-chlorobenzoate is the IUPAC name of a molecule. Please give its molecular formula.
user
C26H18ClIN2O7S
assistant