label: N-acetyl-alpha-D-glucosaminyl-[heparan sulfate](n) + H2O <=> alpha-D-glucosaminyl-[heparan sulfate](n) + acetate
label_lc: n-acetyl-alpha-d-glucosaminyl-[heparan sulfate](n) + h2o <=> alpha-d-glucosaminyl-[heparan sulfate](n) + acetate