You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule (2S,3S)-3-formyl-4-[3-[(4-methyl-1,4-diazoniabicyclo[2.2.2]octan-1-yl)methyl]phenyl]-2-[[4-[4-[(4-methyl-1,4-diazoniabicyclo[2.2.2]octan-1-yl)methyl]phenyl]phenyl]methyl]butanoic acid;tetrachloride .
user
C40H54Cl4N4O3
assistant