[{"from": "human", "value": "Given SMILES, write its poly dispersity index at room temperature and atmospheric pressure. ->  CC1=CC2=C(S1)C(C3=CC=C(CC(CCCC)CC)S3)=C4C(SC(C5=CC=C(C6=C(C(F)=C(C(OCCC(CCCCCC)CCCCCCCC)=O)S7)C7=C(C8=CC=C(C)S8)S6)S5)=C4)=C2C9=CC=C(CC(CC)CCCC)S9\n"}, {"from": "gpt", "value": " 2.92\n"}]