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