Using CNC(=O)c1c(C(Cl)=NO)oc2cc(N(C)S(C)(=O)=O)c(Br)cc12, CC=COCC to produce CCOC1ON=C(c2oc3cc(N(C)S(C)(=O)=O)c(Br)cc3c2C(=O)NC)C1C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.