2-((Diethyl((2-sulfoethyl)thio)stannyl)thio)ethanesulfonic acid compound with guanidine (1:1) AIDS-156271 AIDS156271 Ethanesulfonic acid, 2,2'-[(diethylstannylene)bis(thio)]bis-, compd. with guanidine (1:2) Ethanesulfonic acid, {2,2'-[(diethylstannylene)bis(thio)]bis-,} compd. with guanidine (1:2) NSC363063