label: [N-acetyl-alpha-D-neuraminosyl-(2->8)](n) + n acetyl-CoA <=> [O(7),N-diacetyl-alpha-D-neuraminosyl-(2->8)](n) + n CoA
label_lc: [n-acetyl-alpha-d-neuraminosyl-(2->8)](n) + n acetyl-coa <=> [o(7),n-diacetyl-alpha-d-neuraminosyl-(2->8)](n) + n coa