Using C1COCCN1, CC(C)(C)OC(=O)n1c(C(=O)O)cc2cc(OCc3ccccc3)cnc21 to produce CC(C)(C)OC(=O)n1c(C(=O)N2CCOCC2)cc2cc(OCc3ccccc3)cnc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.