label: [N-acetyl-alpha-D-neuraminosyl-(2->8)](n) + n acetyl-CoA = [N,O(9)-diacetyl-alpha-D-neuraminosyl-(2->8)](n) + n CoA
label_lc: [n-acetyl-alpha-d-neuraminosyl-(2->8)](n) + n acetyl-coa = [n,o(9)-diacetyl-alpha-d-neuraminosyl-(2->8)](n) + n coa