You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
7-oxo-6-(2-pyrrolidin-1-ylethyl)-12,14-diaza-7-azoniapentacyclo[10.7.1.02,11.03,8.016,20]icosa-1(19),3(8),9,13,15,17-hexaen-5-one is the IUPAC name of a molecule. Please give its molecular formula.
user
C23H25N4O2+
assistant