Using CCOC(=O)Cl, CCOC(=O)c1c(OC(C)C)cc(OC(C)C)nc1C(F)(F)F to produce CCOC(=O)c1c(OC(C)C)nc(C(F)(F)F)c(C(=O)OCC)c1OC(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.