label: Fe(III)-[N-(2,3-dihydroxybenzoyl)-L-serine] + N-(2,3-dihydroxybenzoyl)-L-serine => Fe(III)-[N-(2,3-dihydroxybenzoyl)-L-serine]2 + H2O + H(+)
label_lc: fe(iii)-[n-(2,3-dihydroxybenzoyl)-l-serine] + n-(2,3-dihydroxybenzoyl)-l-serine => fe(iii)-[n-(2,3-dihydroxybenzoyl)-l-serine]2 + h2o + h(+)