109961-29-7 Poly(oxy-1,2-ethanediyl), alpha-hydro-omega-hydroxy-, ether with N-(4-((4-(bis(2-hydroxyethyl)amino)-2-methylphenyl)(2-sulfophenyl)methylene)-3-methyl-2,5-cyclohexadien-1-ylidene)-2-hydroxy-N-(2-hydroxyethyl)ethanaminium carbonate (salt) (4:1:1), monosodium salt