[{"from": "human", "value": "Write solar cell PDI of given SMILES as a p-type polymer and PC71BM or PCBM. ->  CC1=CC2=C(C(SC(C3=CC=C(C)C4=NSN=C43)=C5)=C5N2C(CCCCCC)CCCCCC)S1\n"}, {"from": "gpt", "value": " 2.06\n"}]