2,7-Naphthalenedisulfonic acid,5-[[4-chloro-6-[[3-[[2-(sulfooxy)ethyl]sulfonyl]phenyl]amino]-1,3,5-triazin-2-yl]amino]-4-hydroxy-3-[[2-methoxy-5-methyl-4-[[2-sulfo-4-[(4-sulfophenyl)azo]phenyl]azo]phenyl]azo]- [ 106206-21-7 ]