72906-23-1

[9-(2-ethoxycarbonylphenyl)-6-(ethylamino)-2,7-dimethylxanthen-3-ylidene]-ethylazanium;(3e)-3-[[4-[[2-methoxy-4-[(3-sulfophenyl)diazenyl]phenyl]carbamoylamino]phenyl]hydrazinylidene]-6-oxocyclohexa-1,4-diene-1-carboxylate