[{"from": "human", "value": "Provide a brief overview of this molecule. [C][C][Branch1][C][C][Branch1][C][C][C][=Branch1][C][=O][O][C][O][P][=Branch1][C][=O][Branch2][Ring1][Branch1][C][O][C][C][N][C][=N][C][=C][Branch1][=Branch2][N][=C][N][=C][Ring1][=Branch1][Ring1][=Branch2][N][O][C][O][C][=Branch1][C][=O][C][Branch1][C][C][Branch1][C][C][C]"}, {"from": "gpt", "value": "The molecule is an orally-administered acyclic nucleotide analog reverse transcriptase inhibitor (ntRTI) used for treatment of hepatitis B. It is ineffective against HIV-1. Adefovir dipivoxil is the diester prodrug of adefovir."}]