[{"from": "human", "value": "Design a molecule that meets the criteria outlined in the description. The molecule is an AMP-sugar in which the 2'-hydroxy group of AMP carries a 5-phospho-beta-D-ribosyl substituent, the 2-hydroxy group of which itself carries a further 5-phospho-beta-D-ribosyl substituent. Branched portion of poly(ADP-Rib) [poly(adenosine diphosphate ribose)]."}, {"from": "gpt", "value": "[C][=N][C][=Branch2][#Branch1][=N][=C][C][=Branch1][Ring2][=N][Ring1][=Branch1][N][Branch1][Branch1][C][=N][Ring1][=Branch1][C@H1][C@@H1][Branch2][Ring1][Branch1][C@@H1][Branch1][P][C@H1][Branch1][Ring2][O][Ring1][Branch1][C][O][P][=Branch1][C][=O][Branch1][C][O][O][O][O][C@H1][C@@H1][Branch2][Ring1][Branch1][C@@H1][Branch1][P][C@H1][Branch1][Ring2][O][Ring1][Branch1][C][O][P][=Branch1][C][=O][Branch1][C][O][O][O][O][C@H1][C@@H1][Branch2][Ring1][Branch1][C@@H1][Branch1][P][C@H1][Branch1][Ring2][O][Ring1][Branch1][C][O][P][=Branch1][C][=O][Branch1][C][O][O][O][O][N]"}]