[{"from": "human", "value": "Generate a molecule based on this description. The molecule is a quinoxaline derivative in which the quinoxaline (1,4-naphthyridine) skeleton is substituted at C-5 with a methyl group."}, {"from": "gpt", "value": "[C][C][=C][C][=Branch1][=Branch1][=C][C][=C][Ring1][=Branch1][N][=C][C][=N][Ring1][=Branch2]"}]