You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
ethyl 2-[[2-[(2E)-2-[1-[3-methoxy-4-(2-methylbenzoyl)oxyphenyl]ethylidene]hydrazinyl]-2-oxoacetyl]amino]-5,6-dihydro-4H-cyclopenta[b]thiophene-3-carboxylate is the IUPAC name of a molecule. Please give its molecular formula.
user
C29H29N3O7S
assistant