[{"from": "human", "value": "What is solar cell solar cell open-circuit voltage of given SMILES as a p-type polymer and PC71BM or PCBM? ->  CC1=CC=C(C2=CC(N(C(CCCCCCCCCC)CCCCCCCCCC)C3=CC(C4=CC=C(C5=C(N=C(C)C(C)=N6)C6=C(C7=CC=C(C)S7)S5)S4)=CC=C38)=C8C=C2N9C(CCCCCCCCCC)CCCCCCCCCC)C9=C1\n"}, {"from": "gpt", "value": " 2.55\n"}]