(RS)-7-beta-Diethylaminoethyl-8-(1'-hydroxybut-2'-yl)aminotheophylline hydrochloride 119256-88-1 1H-Purine-2,6-dione, 3,7-dihydro-7-(2-(diethylamino)ethyl)-1,3-dimethyl-8-((1-(hydroxymethyl)propyl)amino)-, monohydrochloride, (+-)-