Synonyms: (2r,3r,4s,5r,2'r,3'r,4's,5'r)-2,2'-[butane-1,4-diylbis(imino-9h-purine-6,9-diyl)]bis[5-(hydroxymethyl)tetrahydrofuran-3,4-diol](non-preferred name);6639-66-3;AC1L4HWS;AC1Q4Y1E;KST-1A7310;60687-65-2;AR-1A2895;(2R,3R,4S,5R)-2-[6-[4-[[9-[(2R,3R,4S,5R)-3,4-dihydroxy-5-(hydroxymethyl)oxolan-2-yl]purin-6-yl]amino]butylamino]purin-9-yl]-5-(hydroxymethyl)oxolane-3,4-diol