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system
1-[[3,5-bis[[4-(1-ethylpyridin-1-ium-4-yl)pyridin-1-ium-1-yl]methyl]phenyl]methyl]-4-[1-[[3-[[4-[4-[[3,5-bis[[4-(1-ethylpyridin-1-ium-4-yl)pyridin-1-ium-1-yl]methyl]phenyl]methyl]phenyl]pyridin-1-ium-1-yl]methyl]-5-[[4-[1-[[3,5-bis[[4-(1-ethylpyridin-1-ium-4-yl)pyridin-1-ium-1-yl]methyl]phenyl]methyl]pyridin-1-ium-4-yl]pyridin-1-ium-1-yl]methyl]phenyl]methyl]pyridin-1-ium-4-yl]pyridin-1-ium The above is the IUPAC name of a molecule. Write its molecular formula.
user
C139H138N17+17
assistant