N-(acetyl)-sphing-4-enine + a 1,2-diacyl-sn-glycero-3-phosphocholine <=> 1-O-acyl-N-(acetyl)-sphing-4-enine + a 1-acyl-sn-glycero-3-phosphocholine
n-(acetyl)-sphing-4-enine + a 1,2-diacyl-sn-glycero-3-phosphocholine <=> 1-o-acyl-n-(acetyl)-sphing-4-enine + a 1-acyl-sn-glycero-3-phosphocholine