[{"from": "human", "value": "Write solar cell open-circuit voltage of given SMILES as a p-type polymer and PC71BM or PCBM. ->  O=C1N(CCCCCCCC)C(C2=CC=C(C3=CC=C([Ge](CCCC)(CCCC)C4=C5C=CC(C)=C4)C5=C3)S2)=C6C1=C(C7=CC=C(C)S7)N(CCCCCCCC)C6=O\n"}, {"from": "gpt", "value": " 0.76\n"}]