label: a beta-D-galactosyl-(1->4)-beta-D-glucosyl-(1<->1)-ceramide + UDP-alpha-D-galactose => an isogloboside iGb3Cer + UDP + H(+)
label_lc: a beta-d-galactosyl-(1->4)-beta-d-glucosyl-(1<->1)-ceramide + udp-alpha-d-galactose => an isogloboside igb3cer + udp + h(+)