Showing structure for [(3s,3as,4r,5r,7r,7ar)-3,3a,4-trihydroxy-7-(2-imino-1h-purin-9-yl)-hexahydrofuro[2,3-c]pyran-5-yl][(2-amino-5-carbamimidamido-1-hydroxypentylidene)amino]acetic acid