72208-06-1 Cuprate(5-), (4-amino-3-((2,5-disulfophenyl)azo)-5-(hydroxy-kappaO)-6-((2-(hydroxy-kappaO)-5-((2-(sulfooxy)ethyl)sulfonyl)phenyl)azo-kappaN1)-2,7-naphthalenedisulfonato(7-))-, pentahydrogen