2-amino-9-((1R,2R,3S)-2,3-bis(hydroxymethyl)cyclobutyl)-1H-purin-6(9H)-one; 2-Amino-9-[(1R,2R,3S)-2,3-bis(hydroxymethyl)cyclobutyl]-1,9-dihydro-6H-purin-6-one;[1R-(1?,2?,3?)]-2-Amino-9-[2,3-bis(hydroxymethyl)cyclobutyl]-1,9-dihydro-6H-purin-6-one;Lobucavir
