1-hexadecanoyl-2-(5-oxopentanoyl)-sn-glycero-3-phosphocholine + H2O = 5-oxopentanoate + 1-hexadecanoyl-sn-glycero-3-phosphocholine + H(+)
1-hexadecanoyl-2-(5-oxopentanoyl)-sn-glycero-3-phosphocholine + h2o = 5-oxopentanoate + 1-hexadecanoyl-sn-glycero-3-phosphocholine + h(+)