label: 1-octadecanoyl-2-(9Z,12Z)-octadecadienoyl-sn-glycero-3-phosphocholine + H2O => 2-(9Z,12Z-octadecadienoyl)-sn-glycero-3-phosphocholine + octadecanoate + H(+)
label_lc: 1-octadecanoyl-2-(9z,12z)-octadecadienoyl-sn-glycero-3-phosphocholine + h2o => 2-(9z,12z-octadecadienoyl)-sn-glycero-3-phosphocholine + octadecanoate + h(+)