[{"from": "human", "value": "Design a molecule that meets the criteria outlined in the description. The molecule is an anthracycline antibiotic that is steffimycin in which the carbonyl group that is adjacent to the carbon bearing both a hydroxy group and a methyl group has been reduced to the corresponding methylene group. An antitumour anthracycline first isolated from Streptomyces steffisburgensis. It has a role as an intercalator, an antineoplastic agent, a bacterial metabolite and an EC 3.4.24.3 (microbial collagenase) inhibitor. It is functionally related to a 2-O-methyl-alpha-L-rhamnose."}, {"from": "gpt", "value": "[C][C@H1][C@@H1][Branch2][=Branch1][=Branch2][C@H1][Branch2][=Branch1][Ring2][C@H1][Branch2][Branch1][=C][C@@H1][Branch1][Ring2][O][Ring1][=Branch1][O][C][C@@H1][Branch2][Ring2][S][C@][Branch2][Ring2][Branch2][C][C][=C][C][=C][Branch1][#Branch2][C][=Branch1][=Branch1][=C][Ring1][#Branch2][Ring1][=Branch1][O][C][=Branch1][C][=O][C][=C][Branch1][Branch1][C][Ring1][#Branch2][=O][C][=C][Branch1][=Branch1][C][=C][Ring1][Branch2][O][O][C][Branch1][C][C][O][O][C][O][C][O][O]"}]