The molecule is the anion resulting from the removal of the proton from the phosphate group of precursor Z. It is a conjugate base of a precursor Z. It is a conjugate acid of a precursor Z(2-).
5-amino-14-oxido-14-oxo-13,15,18-trioxa-2,4,6,9-tetraza-14lambda5-phosphatetracyclo[8.8.0.03,8.012,17]octadeca-3(8),4-diene-7,11-dione