You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(16Z,18Z)-14,14,20-trimethyl-N-(3-methylphenyl)-N-phenyl-3-oxatetracyclo[11.7.0.02,10.04,9]icosa-1(13),2(10),4(9),5,7,11,16,18-octaen-5-amine The above is the IUPAC name of a molecule. Write its molecular formula.
user
C35H33NO
assistant