[{"from": "human", "value": "What is solar cell PCE of given SMILES as a p-type polymer and PC71BM or PCBM? ->  O=C1N(C(CCCCCCCC)CCCCCCCC)C(C2=C(C)SC(C3=CC4=C(OC[C@@H](CC)CCCC)C5=CC(SC(C)=C6)=C6C(OC[C@@H](CC)CCCC)=C5C=C4S3)=C21)=O\n"}, {"from": "gpt", "value": " 4.0\n"}]