Using CCOC(=O)CN1CCN(C(=O)Cc2cc(OC)c(OC)c(OC)c2)CC1 to produce CCOC(=O)CN1CCN(C(=O)Cc2cc(O)c(O)c(O)c2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.