Using Cn1ccc2c(-c3ccc(OCCC4CCN(C(=O)OC(C)(C)C)CC4)c(C(F)(F)F)c3)nc(C#N)nc21 to produce Cn1ccc2c(-c3ccc(OCCC4CCNCC4)c(C(F)(F)F)c3)nc(C#N)nc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.