label: a neolactoside nLc4Cer + CMP-N-acetyl-beta-neuraminate <=> a neolactoside IV(3)-alpha-NeuAc-nLc4Cer + CMP + H(+)
label_lc: a neolactoside nlc4cer + cmp-n-acetyl-beta-neuraminate <=> a neolactoside iv(3)-alpha-neuac-nlc4cer + cmp + h(+)