[{"from": "human", "value": "Write solar cell VOC of given SMILES as a p-type polymer and PC71BM or PCBM. ->  CC(S1)=CC2=C1C(OCC(CC)CCCC)=C(C=C(C3=C4C(C(F)=C(C(OCC(CCCC)CC)=O)S4)=C(C)S3)S5)C5=C2OCC(CC)CCCC\n"}, {"from": "gpt", "value": " 0.74\n"}]