You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule (R)-[(1S,2S,4S,5R)-5-ethenyl-1-[[4-(trifluoromethyl)phenyl]methyl]-1-azoniabicyclo[2.2.2]octan-2-yl]-quinolin-4-ylmethanol;chloride into molecular formula.
user
C27H28ClF3N2O
assistant