Using CCOC(=O)COCc1cncc(-c2cnc3c(c2)CCCN3C(N)=O)c1 to produce NC(=O)N1CCCc2cc(-c3cncc(COCC(=O)O)c3)cnc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.