[{"from": "human", "value": "Given SMILES, write its PDI at room temperature and atmospheric pressure. ->  CC1=CC2=C(C(C3=CC=C(CC(CCCC)CC)C=C3)=C(C=C(C4=CC=C(C5=C(C(C6=C(CC(CC)CCCC)SC(CC(CCCC)CC)=C6C7=O)=O)C7=C(C8=CC=C(C)S8)S5)S4)O9)C9=C2C%10=CC=C(CC(CC)CCCC)C=C%10)O1\n"}, {"from": "gpt", "value": " 1.4\n"}]