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 1-[(1R,8R,16R)-2-azoniatetracyclo[6.6.2.02,7.09,14]hexadeca-2,4,6,9,11,13-hexaen-16-yl]pyrrolidin-2-one .
user
C19H19N2O+
assistant