You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Under IUPAC nomenclature, a molecule named (2R)-6-(2,4-dichlorophenyl)-2-(3,4-dimethoxyphenyl)-12-oxa-5,7,8,10-tetrazapentacyclo[11.8.0.03,11.04,8.016,21]henicosa-1(13),3(11),4,6,9,14,16,18,20-nonaene is given. What is its corresponding molecular formula?
user
C30H20Cl2N4O3
assistant