label: 13-carboxy-17-(2-carboxyethyl)-15-carboxymethyl-17,18-trans-dihydro-3-vinyl-8-ethyl-2,7,12,18-tetramethylporphyrin
label_lc: 13-carboxy-17-(2-carboxyethyl)-15-carboxymethyl-17,18-trans-dihydro-3-vinyl-8-ethyl-2,7,12,18-tetramethylporphyrin