[{"from": "human", "value": "Write poly dispersity index of given SMILES at room temperature and atmospheric pressure. ->  O=C1N(CC(CCCCCC)CCCCCCCC)C(C2=CC=C(C)S2)=C3C1=C(C4=CC=C(C5=CC=C(C)S5)S4)N(CC(CCCCCCCC)CCCCCC)C3=O\n"}, {"from": "gpt", "value": " 3.15\n"}]