preferred_name: 1-O-hexadecyl-2-O-methyl-sn-glycerol + 1,2-di-(9Z-octadecenoyl)-sn-glycero-3-phosphocholine <=> 1-O-hexadecyl-2-O-methyl-3-(9Z)-octadecenoyl-sn-glycerol + (9Z-octadecenoyl)-sn-glycero-3-phosphocholine