68541-13-9 9,12-Octadecadienoic acid (9Z,12Z)-, dimer, polymer with 3,3'-(oxybis(2,1-ethanediyloxy))bis(1-propanamine) 9,12-Octadecadienoic acid (Z,Z)-, dimer, polymer with 3,3'-(oxybis(2,1-ethanediyloxy))bis(1-propanamine)