Using OB(O)C1CC1, CN1CCC(COCc2cc(C(F)(F)F)cc(Cl)n2)(c2ccc(F)cc2)CC1 to produce CN1CCC(COCc2cc(C(F)(F)F)cc(C3CC3)n2)(c2ccc(F)cc2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.