label: 3,3',5-triiodo-L-thyronine(out) + L-tryptophan(in) = 3,3',5-triiodo-L-thyronine(in) + L-tryptophan(out)
label_lc: 3,3',5-triiodo-l-thyronine(out) + l-tryptophan(in) = 3,3',5-triiodo-l-thyronine(in) + l-tryptophan(out)