[{"from": "human", "value": "Generate a molecule based on the given description. The molecule is a homodetic cyclic peptide that consists of L-valine as the amino acid residue. It is isolated from Lissoclinum bistratum and exhibits antitumour activity against the human colon tumour cell line. It has a role as a metabolite and an antineoplastic agent. It is a homodetic cyclic peptide and a macrocycle."}, {"from": "gpt", "value": "[C][C][=C][C][=Branch1][C][=O][N][C@H1][Branch2][Branch1][=Branch2][C][=N][C][=Branch1][Branch1][=C][S][Ring1][Branch1][C][=Branch1][C][=O][N][C@H1][Branch2][Ring2][C][C][=N][C][=Branch1][Branch1][=C][S][Ring1][Branch1][C][=Branch1][C][=O][N][C@H1][Branch1][N][C][=Branch1][Branch1][=N][Ring2][Ring1][=Branch2][O][Ring2][Ring1][O][C][Branch1][C][C][C][C][Branch1][C][C][C][C][Branch1][C][C][C]"}]