Using C=CC(=O)OCC, CCc1nc2c(N)nc3cc(Br)ccc3c2n1CC1CCOCC1 to produce CCOC(=O)/C=C/c1ccc2c(c1)nc(N)c1nc(CC)n(CC3CCOCC3)c12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.