You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule (4-methoxyphenyl)methyl (6R,7R)-3-(furan-2-yl)-7-[(4-nitrophenyl)methylideneamino]-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate ?
user
C26H21N3O7S
assistant