You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(5Z)-5-[[1-[2-(azepan-1-yl)-2-oxoethyl]-7-ethylindol-3-yl]methylidene]-3-[(4-chlorophenyl)methyl]-1,3-thiazolidine-2,4-dione is the IUPAC name of a molecule. Please give its molecular formula.
user
C29H30ClN3O3S
assistant