disodium 4,4'-bis[(4-methoxy-6-phenoxy-1,3,5-triazin-2-yl)amino]stilbene-2,2'-disulphonate;2,2'-(1,2-Ethenediyl)bis[5-[(4-methoxy-6-phenoxy-1,3,5-triazin-2-yl)amino]benzenesulfonic acid]disodium salt
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