Using O=C(Nc1ccc(NC(=O)ON2C(=O)CCC2=O)cc1)OCC1c2ccccc2-c2ccccc21, CC(C)(C)OC(=O)NCCN to produce CC(C)(C)OC(=O)NCCNC(=O)Nc1ccc(NC(=O)OCC2c3ccccc3-c3ccccc32)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.