preferred_name: thiamine(out) + H(+)(in) <=> thiamine(in) + H(+)(out)
preferred_name_lc: thiamine(out) + h(+)(in) <=> thiamine(in) + h(+)(out)
label: thiamine(out) + H(+)(in) <=> thiamine(in) + H(+)(out)
label_lc: thiamine(out) + h(+)(in) <=> thiamine(in) + h(+)(out)