Using C=CP(=O)(C=C)c1ccc([N+](=O)[O-])c(OC)c1, CCOC(=O)CC(=O)OCC to produce CCOC(=O)C1(C(=O)OCC)CCP(=O)(c2ccc([N+](=O)[O-])c(OC)c2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.