1-octadecanoyl-2-hexadecanoyl-sn-glycero-3-phosphocholine + CoA => 1-octadecanoyl-sn-glycero-3-phosphocholine + hexadecanoyl-CoA
1-octadecanoyl-2-hexadecanoyl-sn-glycero-3-phosphocholine + coa => 1-octadecanoyl-sn-glycero-3-phosphocholine + hexadecanoyl-coa