Using CCOCCl, COC(c1ccc(NC(=O)c2nccnc2C)cc1CC(C)C)(C(F)(F)F)C(F)(F)F to produce CCOCN(C(=O)c1nccnc1C)c1ccc(C(OC)(C(F)(F)F)C(F)(F)F)c(CC(C)C)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.