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