503448-04-2

2,7-Naphthalenedisulfonic acid,4-amino-5-hydroxy-6-[(2-hydroxy-5-nitro-3-sulfophenyl)azo]-3-[[5-[[3-[[[3-[(4-hydroxyphenyl)azo]-4-sulfophenyl]amino]carbonyl]benzoyl]amino]-2-sulfophenyl]azo]-