You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named [(1S,2R,4S,5R)-1-benzyl-5-ethenyl-1-azoniabicyclo[2.2.2]octan-2-yl]-(1-benzylquinolin-1-ium-4-yl)methanol by IUPAC nomenclature, provide its molecular formula.
user
C33H36N2O+2
assistant