Using CCOc1cc(CCC(=O)OC)ccc1-c1cccc(NCC(=O)OC(C)(C)C)n1 to produce CCOc1cc(CCC(=O)OC)ccc1-c1cccc(NC)n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.