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 N-(furan-2-ylmethyl)-2-[(4-hydroxy-3-nitrophenyl)methylideneamino]-4,5,6,7-tetrahydro-1-benzothiophene-3-carboxamide .
user
C21H19N3O5S
assistant