Using CCCCc1nc2c(N)nc3ccccc3c2n1CCCN, COC(=O)Cc1ccc(C=O)cc1 to produce CCCCc1nc2c(N)nc3ccccc3c2n1CCCNCc1ccc(CC(=O)OC)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.