[{"from": "human", "value": "Write solar cell solar cell short-circuit current density of given SMILES. ->  CC1=CC(C(C2=CC(CCCCCC)=C(CC(CC)CCCC)S2)=C(SC(C3=CC(F)=C(C)C4=NSN=C43)=C5)C5=C6C7=CC(CCCCCC)=C(CC(CCCC)CC)S7)=C6S1\n"}, {"from": "gpt", "value": " BFR2\n"}]