Using COCCBr, Cn1c(N2CCN(CC(O)COc3ccc(Cl)cc3)CC2)cc(=O)n(C)c1=O to produce COCCOC(COc1ccc(Cl)cc1)CN1CCN(c2cc(=O)n(C)c(=O)n2C)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.