preferred_name: chloramphenicol(in) + H(+)(out) = chloramphenicol(out) + H(+)(in)
preferred_name_lc: chloramphenicol(in) + h(+)(out) = chloramphenicol(out) + h(+)(in)
label: chloramphenicol(in) + H(+)(out) = chloramphenicol(out) + H(+)(in)
label_lc: chloramphenicol(in) + h(+)(out) = chloramphenicol(out) + h(+)(in)