Using CC(C)(C)OC(=O)N1CCCN2C(=O)OC(c3ccccc3)(c3ccccc3)C2C1 to produce O=C1OC(c2ccccc2)(c2ccccc2)C2CNCCCN12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.