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