COPPER(1+),[5'-[[3-[4,5-DIHYDRO-4-[(2-HYDROXY-5-NITROPHENYL)AZO]-3-METHYL-5-OXO-1H-PYRAZOL-1-YL]PHENYL]AZO]-1'-[3-(DIMETHYLAMINO)PROPYL]-1',2'-DIHYDRO-6'-HYDROXY-4'-METHYL-2'-OXO-1,3'-BIPYRIDINIUMATO(2-)]-,SALT WITH 2-HYDROXYPROPANOIC ACID (1:2)