[{"from": "human", "value": "What is poly dispersity index of given SMILES at room temperature and atmospheric pressure? ->  CC1=CC(CCCCCCCCCCCCCC)=C(C2=NC(SC(C3=C(CCCCCCCCCCCCCC)C=C(C4=CC(CC(CCCCCC)CCCCCCCC)=C(C5=NC(SC(C6=C(CC(CCCCCCCC)CCCCCC)C=C(C)S6)=N7)=C7S5)S4)S3)=N8)=C8S2)S1\n"}, {"from": "gpt", "value": " 1.38\n"}]