You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the compound with this IUPAC name [2-chloro-6-ethoxy-4-[(Z)-[3-[(4-nitrophenyl)methyl]-2,4-dioxo-1,3-thiazolidin-5-ylidene]methyl]phenyl] 2-chlorobenzoate ?
user
C26H18Cl2N2O7S
assistant