You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(1R,2R,6R,7R)-4-[(Z)-[5-(4-methyl-3-nitrophenyl)furan-2-yl]methylideneamino]-4-azatricyclo[5.2.2.02,6]undec-8-ene-3,5-dione is the IUPAC name of a molecule. Please give its molecular formula.
user
C22H19N3O5
assistant