label: N-acetyl-beta-D-galactosamine + a beta-D-Gal-(1->4)-beta-D-Glc-(1<->1)-Cer(d18:1(4E)) => a ganglioside GA2 (d18:1(4E)) + H2O
label_lc: n-acetyl-beta-d-galactosamine + a beta-d-gal-(1->4)-beta-d-glc-(1<->1)-cer(d18:1(4e)) => a ganglioside ga2 (d18:1(4e)) + h2o