ammonium 7-[[2-hydroxy-5-[(4-hydroxyphenyl)sulphonyl]phenyl]methyl](1-methylpropyl)naphthalene-2-sulphonate;7-[[2-Hydroxy-5-[(4-hydroxyphenyl)sulfonyl]phenyl]methyl](1-methylpropyl)-2-naphthalenesulfonic acid ammonium salt
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