preferred_name: O-acetyl-L-serine + L-homocysteine => L,L-cystathionine + acetate + H(+)
preferred_name_lc: o-acetyl-l-serine + l-homocysteine => l,l-cystathionine + acetate + h(+)
label: O-acetyl-L-serine + L-homocysteine => L,L-cystathionine + acetate + H(+)
label_lc: o-acetyl-l-serine + l-homocysteine => l,l-cystathionine + acetate + h(+)