[{"from": "human", "value": "Given SMILES, write its solar cell solar cell poly dispersity index as a p-type polymer and PC71BM or PCBM. ->  CC(S1)=CC=C1C2=C(N=C(C3=CC(OC[C@H](CC)CCCC)=CC=C3)C(C4=CC=CC(OCC(CC)CCCC)=C4)=N5)C5=C(C(S6)=CC=C6C(S7)=CC(C7=C8OCC(CC)CCCC)=C(OCC(CCCC)CC)C9=C8C=C(C)S9)C=C2\n"}, {"from": "gpt", "value": " 3.06\n"}]