rel-2,2'-((1E,1'E)-(((1R,2S)-1,2-Di-p-tolylethane-1,2-diyl)bis(azanylylidene))bis(methanylylidene))diphenol 5g

rel-2,2'-((1E,1'E)-(((1R,2S)-1,2-Di-p-tolylethane-1,2-diyl)bis(azanylylidene))bis(methanylylidene))diphenol 5g