Using CC(C)(C)OC(=O)Nc1ccccc1N, CCOP(=O)(CC(=O)O)OCC to produce CCOP(=O)(CC(=O)Nc1ccccc1NC(=O)OC(C)(C)C)OCC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.