The molecule is an optically active twelve-membered tetraazamacrocycle having a carboxymethyl group attached to each of the nitrogens and a 4-(2-bromoacetamido)benzyl group at the 2-position. It is an azamacrocycle and a tetracarboxylic acid. It derives from a DOTA.
2-[(6S)-6-[[4-[(2-bromoacetyl)amino]phenyl]methyl]-4,7,10-tris(carboxymethyl)-1,4,7,10-tetrazacyclododec-1-yl]acetic acid