You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
23-[1-(10-butyl-6,7-diethyl-6-methylbenzo[a]quinolizin-5-ium-7-yl)ethyl]-19-phenyl-24-azoniahexacyclo[12.11.0.02,7.08,13.016,24.017,22]pentacosa-1(25),2,4,6,8,10,12,14,16(24),17(22),18,20-dodecaene is the IUPAC name of a molecule. Please give its molecular formula.
user
C54H52N2+2
assistant