You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(5Z)-5-[[4-[(4-bromophenyl)methoxy]-3-ethoxyphenyl]methylidene]-2-imino-1,3-thiazolidin-4-one is the IUPAC name of a molecule. Please give its molecular formula.
user
C19H17BrN2O3S
assistant