[{"from": "human", "value": "Given SMILES, write its solar cell solar cell VOC as a p-type polymer and PC71BM or PCBM. ->  CC1=C2C(N=C(CCCCCCCC)S2)=C(C3=CC=C(C4=CC=C(C)C=C4N5C(CCCCCC)CCCCCC)C5=C3)S1\n"}, {"from": "gpt", "value": " 2.27\n"}]