[{"from": "human", "value": "Given SMILES, write its solar cell solar cell PDI as a p-type polymer and PC71BM or PCBM. ->  O=C1C(C2=C(C3=CC=C(C4=CC(SC(C)=C5)=C5S4)S3)N1CC(CCCCCCCCCC)CCCCCCCCCCCC)=C(C6=CC=C(C)S6)N(C[C@@H](CCCCCCCCCCCC)CCCCCCCCCC)C2=O\n"}, {"from": "gpt", "value": " 5.5\n"}]