You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(5Z)-3-ethyl-2-(4-fluorophenyl)imino-5-[[1-(4-hydroxyphenyl)pyrrol-2-yl]methylidene]-1,3-thiazolidin-4-one The above is the IUPAC name of a molecule. Write its molecular formula.
user
C22H18FN3O2S
assistant