Using COc1ccccc1CN1Cc2ccccc2N=C1N1CCN(C(=O)OC(C)(C)C)CC1 to produce COc1ccccc1CN1Cc2ccccc2N=C1N1CCNCC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.