Robuta

https://pubchem.ncbi.nlm.nih.gov/compound/Tetrakis_9-_2-_ethoxycarbonyl_phenyl_-3_6-bis_ethylamino_-2_7-dimethylxanthylium_-C12-_branched-and_ Tetrakis(9-(2-(ethoxycarbonyl)phenyl)-3,6-bis(ethylamino)-2,7-dimethylxanthylium) C12-(branched... Tetrakis(9-(2-(ethoxycarbonyl)phenyl)-3,6-bis(ethylamino)-2,7-dimethylxanthylium) C12-(branched and/or linear)-alkyl-(4-sulfonatophenoxy)benzenesulfonate and...