The molecule is a cyclic purine dinucleotide that consists of AMP and GMP units cyclised via 2',5'-linkages. It is an adenyl ribonucleotide, a cyclic purine dinucleotide and a guanyl ribonucleotide.
2-amino-9-[(1R,6R,8R,9R,14R,16R,17R,18R)-16-(6-aminopurin-9-yl)-3,11,17,18-tetrahydroxy-3,11-dioxo-2,4,7,10,12,15-hexaoxa-3lambda5,11lambda5-diphosphatricyclo[12.2.1.16,9]octadecan-8-yl]-1H-purin-6-one