Using COc1ccc(NC(=O)OC(C)(C)C)c(OC)n1, COC(=O)Cl to produce COC(=O)c1cc(OC)nc(OC)c1NC(=O)OC(C)(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.