You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[(5Z)-2-azabicyclo[9.4.0]pentadeca-1(15),5,11,13-tetraen-2-yl]-(4-hydroxy-3,5-dimethoxyphenyl)methanone The above is the IUPAC name of a molecule. Write its molecular formula.
user
C23H27NO4
assistant