You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the compound with this IUPAC name chloroethane;4,10-dicyclopropyl-4,10-diazatetracyclo[5.5.2.02,6.08,12]tetradec-13-ene-3,5,9,11-tetrone ?
user
C20H23ClN2O4
assistant