label: [(2->6)-alpha-D-glucosyl-(1->4)-N,O(9)-diacetyl-alpha-D-neuraminosyl](n) + n CoA => [(2->6)-alpha-D-glucosyl-(1->4)-N-acetyl-alpha-D-neuraminosyl](n) + n acetyl-CoA
label_lc: [(2->6)-alpha-d-glucosyl-(1->4)-n,o(9)-diacetyl-alpha-d-neuraminosyl](n) + n coa => [(2->6)-alpha-d-glucosyl-(1->4)-n-acetyl-alpha-d-neuraminosyl](n) + n acetyl-coa