SMILES: C1CN(CCN(CCCN(CCN(C1)CC(=O)O)CC(=O)O)CC(=O)O)CC(=O)O
Description: The molecule is an azamacrocyle in which four nitrogen atoms at positions 1, 4, 8 and 11 of a fouteen-membered ring are each substituted with a carboxymethyl group. It has a role as a chelator. It derives from a hydride of a 1,4,8,11-tetraazacyclotetradecane.