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