Using CCOC(=O)Cn1c2c(c3ccccc31)CN(C(=O)OC(C)(C)C)CC2 to produce CC(C)(C)OC(=O)N1CCc2c(c3ccccc3n2CC(=O)O)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.