You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule 11,14-dimethyl-4,14-diaza-11-azoniapentacyclo[11.7.0.02,6.07,12.015,20]icosa-1,6,8,10,12,15,17,19-octaen-5-one .
user
C19H16N3O+
assistant