[{"from": "human", "value": "Could you give me a brief overview of this molecule? [C][N][C][=Branch1][C][=O][C@@][C][C][=C][Branch2][Ring1][Ring1][N][Ring1][Branch1][C][=Branch1][C][=O][C@@][Ring1][O][Branch1][Branch1][S][S][Ring1][#Branch2][C][O][C][=C][Branch1][Branch1][C][=C][Ring1][=C][N+1][=Branch1][C][=O][O-1]"}, {"from": "gpt", "value": "The molecule is a pyrazinoindole with a disulfide bridge spanning a dioxo-substituted pyrazine ring. It is an antibiotic isolated from the microbial strains Sphingomonas and Aspergillus fumigatus, and exhibits cytotoxic activity against four human cancer cell lines: HCT-116, A549, AGS, and DU145. It has a role as an antimicrobial agent, an antineoplastic agent and an Aspergillus metabolite. It is an organic disulfide, a pyrazinoindole, a C-nitro compound and an organic heterotetracyclic compound."}]