Adenosine, [P(R)]-2′-deoxy-2′-fluoro-5′-O-[(R)-hydroxymercaptophosphinyl]-P-thioadenylyl-(3′→5′)-2′-deoxy-N-[4-[4-[(2,5-dihydro-2,5-dioxo-1H-pyrrol-1-yl)methyl]-1H-1,2,3-triazol-1-yl]-1-oxobutyl]-2′-fluoro-, cyclic nucleotide