label: a ganglioside GD2 (d18:1(4E)) + UDP-alpha-D-galactose => a ganglioside GD1b (d18:1(4E)) + UDP + H(+)
label_lc: a ganglioside gd2 (d18:1(4e)) + udp-alpha-d-galactose => a ganglioside gd1b (d18:1(4e)) + udp + h(+)