Using O=C(O)CCO, CN(CC1CCNC1)S(=O)(=O)N1CCN(c2ncnc3[nH]ccc23)CC12CC2 to produce CN(CC1CCN(C(=O)CCO)C1)S(=O)(=O)N1CCN(c2ncnc3[nH]ccc23)CC12CC2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.