[{"from": "human", "value": "What is poly dispersity index of given SMILES at room temperature and atmospheric pressure? ->  CC(S1)=CC2=C1C(C3=CC=C(CC(CCCCCCCCCCCC)CCCCCCCCCC)S3)=C(C=C(C4=CC=C(C5=C(F)C=C(C6=CC=C(C)S6)C7=N[Se]N=C75)S4)S8)C8=C2C9=CC=C(CC(CCCCCCCCCCCC)CCCCCCCCCC)S9\n"}, {"from": "gpt", "value": " 2.14\n"}]