You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
methyl 2-[(E)-3-[(13-ethylidene-11-methyl-5-oxo-6-azatricyclo[7.3.1.02,7]trideca-2(7),3,10-trien-1-yl)imino]prop-1-enyl]benzoate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C26H26N2O3
assistant