[{"from": "human", "value": "Write solar cell open-circuit voltage of given SMILES as a p-type polymer and PC71BM or PCBM. ->  CC1=CC2=C(C(OCC(CC)CCCC)=C(C=C(C3=C4C([Se]C(C(OCC(CC)CCCC)=O)=C4)=C(C)[Se]3)[Se]5)C5=C2OCC(CCCC)CC)[Se]1\n"}, {"from": "gpt", "value": " 0.64\n"}]