preferred_name: malonate(out) + sulfate(in) => malonate(in) + sulfate(out)
preferred_name_lc: malonate(out) + sulfate(in) => malonate(in) + sulfate(out)
label: malonate(out) + sulfate(in) => malonate(in) + sulfate(out)
label_lc: malonate(out) + sulfate(in) => malonate(in) + sulfate(out)