Using CC(C)(C)OC(=O)N1CCC2(CC1)CN(Cc1ccccc1)C(C)(C)CO2 to produce CC1(C)COC2(CCNCC2)CN1Cc1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.