[{"from": "human", "value": "Write solar cell open-circuit voltage of given SMILES as a p-type polymer and PC71BM or PCBM. ->  O=C(N1CC(CCCC)CC)/C(C2=C1C=C(C)S2)=C3C(N(CC(CC)CCCC)C4=C/3SC(C5=CC6=C(OCC(CCCC)CC)C7=C(C=C(C)S7)C(OCC(CCCC)CC)=C6S5)=C4)=O\n"}, {"from": "gpt", "value": " 0.39\n"}]