Iron(1+), bis[1-[5-[[3-[4-[[5-(aminosulfonyl)-2-hydroxyphenyl]azo]-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-1-yl]phenyl]azo]-1-[3-(dimethylamino)propyl]-1,2-dihydro-6-hydroxy-4-methyl-2-oxo-3-pyridinyl]pyridiniumato(2-)]-, salt with 2-hydroxypropanoic acid (