[{"from": "human", "value": "Given SMILES, write its poly dispersity index at room temperature and atmospheric pressure. ->  CC(S1)=CC=C1C2=C(F)C(F)=C(C(S3)=CC=C3C(S4)=CC(C4=C5C6=CC=C(C[C@H](CCCC)CC)S6)=C(C7=CC=C(CC(CC)CCCC)S7)C8=C5C=C(C)S8)C9=C2N=C(C%10=CC=C(OC[C@@H](CC)CCCC)C=C%10)C(C%11=CC=C(OCC(CC)CCCC)C=C%11)=N9\n"}, {"from": "gpt", "value": " 1.59\n"}]