1-hydroxy-4-[[[4-hydroxy-3-(2-pyridylazo)naphthyl]sulphonyl]amino]-N,N-dioctadecylnaphthalene-2-carboxamide

1-Hydroxy-4-[[[4-hydroxy-3-(2-pyridinylazo)-1-naphthalenyl]sulfonyl]amino]-N,N-dioctadecyl-2-naphthalenecarboxamide