[{"from": "human", "value": "Write solar cell solar cell VOC of given SMILES as a p-type polymer and PC71BM or PCBM. ->  O=C1N(CCCCCCCC)C(C2=C(C)SC(C(S3)=CC4=C3C(C5=CC=C(CC(CC)CCCC)O5)=C6C(SC(C)=C6)=C4C7=CC=C(C[C@H](CCCC)CC)O7)=C21)=O\n"}, {"from": "gpt", "value": " 7.8\n"}]