AIDS-159158 AIDS159158 NSC690018 (PERCHLORIC SALT) Perchloric acid compound with N~6~,N~6~,N~13~,N~13~,9,10-hexamethyl-5lambda~5~,12lambda~5~-dipyrido[1',2':3,4]imidazo[1,5-a:5,1-c]quinoxaline-6,13-diamine (1:1)