You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
ethyl (5Z)-5-[[5-bromo-2-[(3,4-dichlorophenyl)methoxy]phenyl]methylidene]-2-(2-chlorobenzoyl)imino-4-hydroxythiophene-3-carboxylate is the IUPAC name of a molecule. Please give its molecular formula.
user
C28H19BrCl3NO5S
assistant