You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule (4-methylphenyl) (4Z)-4-(carbamoylhydrazinylidene)-3,6,6-trimethyl-5,7-dihydro-1-benzofuran-2-carboxylate .
user
C20H23N3O4
assistant