1-octadecanoyl-sn-glycero-3-phosphocholine + acetate + H(+) => 1-octadecanoyl-2-acetyl-sn-glycero-3-phosphocholine + H2O
1-octadecanoyl-sn-glycero-3-phosphocholine + acetate + h(+) => 1-octadecanoyl-2-acetyl-sn-glycero-3-phosphocholine + h2o