label: 1-O-alkyl-2-acyl-sn-glycero-3-phospho-1D-myo-inositol + phosphate => 1-O-alkyl-2-acyl-sn-glycero-3-phospho-(1'-myo-inositol-5'-phosphate) + H2O
label_lc: 1-o-alkyl-2-acyl-sn-glycero-3-phospho-1d-myo-inositol + phosphate => 1-o-alkyl-2-acyl-sn-glycero-3-phospho-(1'-myo-inositol-5'-phosphate) + h2o