label: an isogloboside iGb3Cer (d18:1(4E)) + UDP + H(+) => a beta-D-Gal-(1->4)-beta-D-Glc-(1<->1)-Cer(d18:1(4E)) + UDP-alpha-D-galactose
label_lc: an isogloboside igb3cer (d18:1(4e)) + udp + h(+) => a beta-d-gal-(1->4)-beta-d-glc-(1<->1)-cer(d18:1(4e)) + udp-alpha-d-galactose