Reactive Violet 5

CC(=O)NC1=CC(=CC2C1C(=C(C(=C2)S(=O)(=O)[O-])N=NC3=C(C=C(C=C3)S(=O)(=O)CCOS(=O)(=O)[O-])O)O)S(=O)(=O)[O-].[Na+].[Na+].[Na+].[Cu]