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