[{"from": "human", "value": "Given SMILES, write its solar cell open-circuit voltage as a p-type polymer and PC71BM or PCBM. ->  CC1=CC([Si](CC(CCCC)CC)(CC(CC)CCCC)C2=C3SC(C4=CC=C(C)C5=NSN=C45)=C2)=C3S1\n"}, {"from": "gpt", "value": " 0.68\n"}]