You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
3-(7-bromo-14-oxo-3,13-diazahexacyclo[14.7.0.02,10.04,9.011,15.017,22]tricosa-1(16),2(10),5,7,11(15),17,19,21-octaen-3-yl)propyl acetate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C26H23BrN2O3
assistant