Using CON, CCC(=O)c1cccc(Oc2nc(OC)cc(OC)n2)c1C(=O)OC to produce CCC(=NOC)c1cccc(Oc2nc(OC)cc(OC)n2)c1C(=O)OC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.