You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[(2Z)-2-[(5S)-5-(2-bromoacetyl)oxy-2-methylidenecyclohexylidene]ethyl]-hydroxy-diphenylphosphanium is the IUPAC name of a molecule. Please give its molecular formula.
user
C23H25BrO3P+
assistant