SMILES: CC(CN1CCN(CCN(CCN(CC1)CC(=O)[O-])CC(=O)[O-])CC(=O)[O-])O
Description: The molecule is a tricarboxylic acid trianion obtained by deprotonation of the three carboxy groups of 2,2',2''-[10-(2-hydroxypropyl)-1,4,7,10-tetraazacyclododecane-1,4,7-triyl]triacetic acid (HP-DO3A). It is a conjugate base of a H3HP-DO3A.