Using O=C(Cl)c1ccco1, Nc1nc(-c2ccco2)c(C(=O)C2CCOCC2)s1 to produce O=C(Nc1nc(-c2ccco2)c(C(=O)C2CCOCC2)s1)c1ccco1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.