Using CCOC(=O)c1c[nH]c2nc(N3CCN(C(C)=O)CC3)ncc2c1=O to produce CC(=O)N1CCN(c2ncc3c(=O)c(C(=O)O)c[nH]c3n2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.