68015-68-9 Poly(oxy-1,2-ethanediyl), alpha-hydro-omega-hydroxy-, ether with 1-((2-((2-(bis(2-hydroxyethyl)amino)ethyl)(2-hydroxyethyl)amino)ethyl)(2-hydroxyethyl)amino)-3-((9Z)-9-octadecenyloxy)-2-propanol (4:1)