label: beta-D-GlcNAc-(1->3)-beta-D-Gal-(1->4)-beta-D-Glc-(1<->1)-ceramide + UDP-alpha-D-galactose => a neolactoside nLc4Cer + UDP + H(+)
label_lc: beta-d-glcnac-(1->3)-beta-d-gal-(1->4)-beta-d-glc-(1<->1)-ceramide + udp-alpha-d-galactose => a neolactoside nlc4cer + udp + h(+)