[{"from": "human", "value": "Generate a molecule based on this description. The molecule is a macrocycle isolated from a marine sediment-derived actinomycete, Streptomyces sp. A stereoisomer of marineosin A, it exhibits cytotoxicity against colon tumour cell lines. It has a role as a metabolite and an antineoplastic agent. It is an azaspiro compound, an ether, a macrocycle, an oxaspiro compound and a member of pyrroles."}, {"from": "gpt", "value": "[C][C@H1][C][C@@H1][C][C][C][C][C][C][C][C][=C][C][=C][Branch2][Ring1][=N][C@H1][Ring1][=N][C@][Branch1][Ring2][O][Ring1][P][C@H1][Branch1][#C][C][C][=Branch1][Ring2][=N][Ring1][=Branch1][C][=C][C][=C][N][Ring1][Branch1][O][C][N][Ring2][Ring1][Ring1]"}]