label: a 1-(9Z-octadecenoyl)-2-acyl-sn-glycero-3-phosphocholine + an N-acylsphing-4-enine => 1-(9Z-octadecenoyl)-2-acyl-sn-3-glycerol + a sphingomyelin
label_lc: a 1-(9z-octadecenoyl)-2-acyl-sn-glycero-3-phosphocholine + an n-acylsphing-4-enine => 1-(9z-octadecenoyl)-2-acyl-sn-3-glycerol + a sphingomyelin