Using C1COCCN1, COc1ccc2c(C(=O)O)nc(Nc3cc(C)[nH]n3)cc2c1 to produce COc1ccc2c(C(=O)N3CCOCC3)nc(Nc3cc(C)[nH]n3)cc2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.