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

1DIPHOSPHATE(4-)
2PYROPHOSPHATE ION
3[O3POPO3](4-)
4PPI
5MU-OXO-HEXAOXODIPHOSPHATE
6DIPHOSPHATE
7MU-OXIDO-BIS(TRIOXIDOPHOSPHATE)(4-)
8P2O7(4-)
9DIPHOSPHAT
10PYROPHOSPHATE
11PYROPHOSPHAT