You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
ethyl 2-[[2-[4-(1H-imidazol-2-yl)benzoyl]oxyacetyl]amino]-4,5-dihydrobenzo[g][1]benzothiole-3-carboxylate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C27H23N3O5S
assistant