Using COC(=O)NC1CNc2ccccc2C1, CC(C)(CC(=O)O)C[C@H]1COC(C)(C)N1C(=O)OC(C)(C)C to produce COC(=O)NC1Cc2ccccc2N(C(=O)CC(C)(C)C[C@H]2COC(C)(C)N2C(=O)OC(C)(C)C)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.