Using CCn1c2ccccc2c2cc(CN)ccc21, CC(NC(=O)OC(C)(C)C)C(=O)O to produce CCn1c2ccccc2c2cc(CNC(=O)C(C)NC(=O)OC(C)(C)C)ccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.