preferred_name: N-acetyl-D-galactosamine + L-seryl-[protein] => 3-O-[N-acetyl-alpha-D-galactosaminyl]-L-seryl-[protein] + H2O
preferred_name_lc: n-acetyl-d-galactosamine + l-seryl-[protein] => 3-o-[n-acetyl-alpha-d-galactosaminyl]-l-seryl-[protein] + h2o
label: N-acetyl-D-galactosamine + L-seryl-[protein] => 3-O-[N-acetyl-alpha-D-galactosaminyl]-L-seryl-[protein] + H2O
label_lc: n-acetyl-d-galactosamine + l-seryl-[protein] => 3-o-[n-acetyl-alpha-d-galactosaminyl]-l-seryl-[protein] + h2o