The name/synonym for ligand CDP (curated from ChEBI, PubChem, and PDB databases):

1CDP
25'-CDP
3CYTIDINE 5'-(TRIHYDROGEN DIPHOSPHATE)
4CYTIDINE, 5'-(TRIHYDROGEN PYROPHOSPHATE)
5CYTIDINE 5'-DIPHOSPHORIC ACID
6CYTIDINE 5'-PYROPHOSPHATE
7CYTIDINE DIPHOSPHATE
8CYTIDINE 5'-DIPHOSPHATE
9CYTIDINE-5'-DIPHOSPHATE