[{"from": "human", "value": "Write solar cell PDI of given SMILES as a p-type polymer and PC71BM or PCBM. ->  CC1=CC2=C(C(OCC(CCCC)CC)=C(C=C(C3=NC(/C=C/C4=C(CCCCCC)C=C(C5=C(F)C(F)=C(C6=CC(CCCCCC)=CS6)C7=NSN=C75)S4)=C(C)S3)S8)C8=C2OCC(CC)CCCC)S1\n"}, {"from": "gpt", "value": " 4.42\n"}]