[{"from": "human", "value": "Write solar cell short-circuit current density of given SMILES as a p-type polymer and PC71BM or PCBM. ->  O=C(OCC(CCCCCCCCCC)CCCCCCCC)C1=C(C2=CC=C(C3=CC=C(C4=CC=C(C)S4)C5=NSN=C53)S2)SC(C6=CC(C(OCC(CCCCCCCC)CCCCCCCCCC)=O)=C(C)S6)=C1\n"}, {"from": "gpt", "value": " 2.79\n"}]