preferred_name: a beta-D-GalNAc-(1->3)-alpha-D-Gal-(1->3)-[alpha-L-Fuc-(1->2)]-beta-D-Gal-(1->4)-beta-D-GlcNAc derivative + H2O = an alpha-D-Gal-(1->3)-[alpha-L-Fuc-(1->2)]-beta-D-Gal-(1->4)-beta-D-GlcNAc derivative + N-acetyl-D-galactosamine