(5Z,8Z,11Z,14Z)-eicosatetraenoate + L-phenylalanine => N-(5Z,8Z,11Z,14Z-eicosatetraenoyl)-L-phenylalanine + H2O
(5z,8z,11z,14z)-eicosatetraenoate + l-phenylalanine => n-(5z,8z,11z,14z-eicosatetraenoyl)-l-phenylalanine + h2o