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