You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Under IUPAC nomenclature, a molecule named 1-benzyl-N-[(E)-(2,4-dihydroxyphenyl)methylideneamino]-5-oxopyrrolidine-3-carboxamide is given. What is its corresponding molecular formula?
user
C19H19N3O4
assistant