(3R)-hydroxy-(17Z,20Z,23Z,26Z)-dotriacontatetraenoyl-CoA = (2E,17Z,20Z,23Z,26Z)-dotriacontapentaenoyl-CoA + H2O
(3r)-hydroxy-(17z,20z,23z,26z)-dotriacontatetraenoyl-coa = (2e,17z,20z,23z,26z)-dotriacontapentaenoyl-coa + h2o