[{"from": "human", "value": "What is poly dispersity index of given SMILES at room temperature and atmospheric pressure? ->  CC(S1)=CC(CC(CCCC)CC)=C1C2=NC(S3)=C(S2)N=C3C4=C(C[C@@H](CCCC)CC)C=C(C5=CC(N(C(CC(CC)CCCC)CC(CCCC)CC)C6=C7C=CC(C)=C6)=C7C=C5)S4\n"}, {"from": "gpt", "value": " 1.62\n"}]