label: a 1-O-(1Z-alkenyl)-sn-glycero-3-phosphocholine + H2O <=> a 1-O-(1Z-alkenyl)-sn-glycero-3-phosphate + choline + H(+)
label_lc: a 1-o-(1z-alkenyl)-sn-glycero-3-phosphocholine + h2o <=> a 1-o-(1z-alkenyl)-sn-glycero-3-phosphate + choline + h(+)