[{"from": "human", "value": "What is solar cell fill factor of given SMILES as a p-type polymer and PC71BM or PCBM? ->  CC1=C(C(C(SC(CCCCCC)=C2)=C2C3=O)=O)C3=C(S1)C4=CC5=C(C(SC(C)=C6)=C6[Si]5(CC(CCCC)CC)CC(CC)CCCC)S4\n"}, {"from": "gpt", "value": " 0.6\n"}]