Using O=Cc1ccccc1Cl, Cc1nc(Cl)c(N)c(NCC(C)(C)O)n1 to produce Cc1nc(Cl)c2nc(-c3ccccc3Cl)n(CC(C)(C)O)c2n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.