label: GDP-beta-L-colitose + beta-D-galactosyl-(1->3)-N-acetyl-D-glucosamine = alpha-L-colitosyl-(1->2)-beta-D-galactosyl-(1->3)-N-acetyl-D-glucosamine + GDP + H(+)
label_lc: gdp-beta-l-colitose + beta-d-galactosyl-(1->3)-n-acetyl-d-glucosamine = alpha-l-colitosyl-(1->2)-beta-d-galactosyl-(1->3)-n-acetyl-d-glucosamine + gdp + h(+)