Using COc1ccc2nccc(-n3cc4c(n3)CCN(C(=O)OCc3ccccc3)C4)c2c1 to produce COc1ccc2nccc(-n3cc4c(n3)CCNC4)c2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.