Reaction catalyzed by beta-galactosidase (3.2.1.23)

		+		H2O	=			+
	9H-(1,3-dichloro-9,9-dimethylacridin-2-one-7-yl) beta-D-galactopyranoside	+		H2O	=		9H-(1,3-dichloro-9,9-dimethylacridin-2-one-7-ol)	+		beta-D-galactose