Benzenesulfonamide, 4-amino-N-(5,6-dimethoxy-4-pyrimidinyl)-, mixt. with 5-(4-chlorophenyl)-6-ethyl-2,4-pyrimidinediamine and (R*,S*)-(+-)-alpha-2-piperidinyl-2,8-bis(trifluoromethyl)-4-quinolinemethanol monohydrochloride