You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(1S,2S,9R)-11-[3-(3,4-dimethoxyphenyl)propanoyl]-7,11-diazatricyclo[7.3.1.02,7]tridecan-6-one The above is the IUPAC name of a molecule. Write its molecular formula.
user
C22H30N2O4
assistant