You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance 6-(3-ethoxyphenyl)-9-(4-methylphenyl)-5,6,6a,8,9,11-hexahydrobenzo[b][1,4]benzodiazepin-7-one .
user
C28H28N2O2
assistant