[{"from": "human", "value": "Please give me some details about this molecule. [C][C][C][C][=Branch1][C][=O][N][C][C][C][C][Ring1][Branch1][C][=Branch1][C][=O][N][Branch2][#Branch1][Ring1][C][Branch2][=Branch1][=Branch1][C][=Branch1][C][=O][N][C][C][C][=Branch1][C][=O][C][C][Ring1][#Branch1][C][=Branch1][C][=O][N][C][Branch2][Ring2][=Branch1][C][=Branch1][C][=O][O][C][Branch2][Ring1][N][C][Branch1][=Branch2][C][=Branch1][C][=O][N][Ring2][Ring1][P][N][C][=Branch1][C][=O][C][=C][Branch1][#Branch1][C][=C][C][=N][Ring1][=Branch1][O][C][C][=C][C][=C][C][=C][Ring1][=Branch1][C][C][=C][C][=C][C][=C][Ring1][=Branch1][C]"}, {"from": "gpt", "value": "The molecule is a streptomycin B-related cyclic depsipeptide isolated from the bacterium Streptomyces virginiae and other Streptomyces bacterial species.  Virginiamycin S1 binds to and inhibits the formation of 50S ribosomes, thereby preventing protein synthesis. (NCI04)"}]