Using CCOC(=O)COc1ccn(Cc2cc(Br)ccc2OCC(CC)CC)n1, C1CCOC1 to produce CCC(CC)COc1ccc(Br)cc1Cn1nc(OCC(=O)O)cc1C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.