preferred_name: 1-hexadecanoyl-2-(9Z,12Z-octadecadienoyl)-sn-glycero-3-phosphocholine + 1-hexadecanoyl-sn-glycero-3-phosphoethanolamine => 1-hexadecanoyl-2-(9Z,12Z-octadecadienoyl)-sn-glycero-3-phosphoethanolamine + 1-hexadecanoyl-sn-glycero-3-phosphocholine