71251-04-2 Poly(1,2-dicarboxy-3-hexadecyl-1,4-butanediyl) Poly(1,2-dicarboxy-3-hexadecyltetramethylene) Surfomer Surfomer [USAN:INN] Surfomere [INN-French] Surfomerum [INN-Latin] Surforner [C22H40O4]n; n=5-50 or more