The molecule is an organophosphate oxoanion obtained by deprotonation of the phosphate OH groups of guanosine 2'-monophosphate. It is a conjugate base of a guanosine 2'-monophosphate.
[(2R,3R,4R,5R)-2-(2-amino-6-oxo-1H-purin-9-yl)-4-hydroxy-5-(hydroxymethyl)oxolan-3-yl] phosphate