Chemical Name: Entecavir (R,R,R)-Isomer ; 2-amino-9-((1R,3R,4R)-4-hydroxy-3-(hydroxymethyl)-2-methylenecyclopentyl)-1,9-dihydro-6H-purin-6-on
Synonym: 5-Fluoro-1,3-dihydro-indol-2-one ; 5-Fluoro-2-oxindole
Smile: O=C1C2=C(N([C@H]3C([C@H](CO)[C@H](O)C3)=C)C=N2)N=C(N)N1