(2R,3R,4S,5R)-2-(4-aminopyrrolo(2,1-f)(1,2,4)triazin-7-yl)-3,4-dihydroxy-5-(hydroxymethyl)tetrahydro-2-furancarbonitrile
(2r,3r,4s,5r)-2-(4-aminopyrrolo(2,1-f)(1,2,4)triazin-7-yl)-3,4-dihydroxy-5-(hydroxymethyl)tetrahydro-2-furancarbonitrile