The molecule is an organophosphate oxoanion that is the conjugate base of 8-bromo-3',5'-cyclic GMP, arising from deprotonation of the phosphate OH group.
9-[(4aR,6R,7R,7aS)-7-hydroxy-2-oxido-2-oxo-4a,6,7,7a-tetrahydro-4H-furo[3,2-d][1,3,2]dioxaphosphinin-6-yl]-2-amino-8-bromo-1H-purin-6-one