Using O=C1CNCCN1C1CCOCC1, Clc1nc(N2CCOCC2)c2sc(CBr)cc2n1 to produce O=C1CN(Cc2cc3nc(Cl)nc(N4CCOCC4)c3s2)CCN1C1CCOCC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.