[{"from": "human", "value": "Provide a brief overview of this molecule. [C][C][C@H1][Branch1][C][C][C@H1][C][=Branch1][C][=O][N][C][C][C][C@H1][Ring1][Branch1][C][=Branch1][C][=O][N][C@H1][Branch2][Branch1][N][C][=Branch1][C][=O][N][C@H1][Branch2][Ring2][N][C][=Branch1][C][=O][N][C@H1][Branch2][Ring2][C][C][=Branch1][C][=O][N][C@H1][Branch2][Ring1][C][C][=Branch1][C][=O][N][C@H1][Branch1][=Branch2][C][=Branch1][C][=O][N][Ring2][Ring1][#C][C][C][C][S][=Branch1][C][=O][C][C][C][C][=Branch1][C][=O][O][C][C][C][=C][C][=C][C][=C][Ring1][=Branch1]"}, {"from": "gpt", "value": "The molecule is a homodetic cyclic peptide isolated from a marine sponge Phakellia sp. It exhibits cytotoxic activity against murine P388 lymphocytic leukemia cells and moderate cancer cell growth inhibitory activity against a panel of human cancer cells. It has a role as a metabolite. It is a homodetic cyclic peptide, a sulfoxide, a carboxylic ester and a macrocycle."}]