label: [thyroglobulin]-3-iodo-L-tyrosine + [thyroglobulin]-3,5-diiodo-L-tyrosine + H2O2 => [thyroglobulin]-3,3',5-triiodo-L-thyronine + [thyroglobulin]-dehydroalanine + 2 H2O
label_lc: [thyroglobulin]-3-iodo-l-tyrosine + [thyroglobulin]-3,5-diiodo-l-tyrosine + h2o2 => [thyroglobulin]-3,3',5-triiodo-l-thyronine + [thyroglobulin]-dehydroalanine + 2 h2o