Using O=C(CCl)OC(c1ccccc1)c1ccccc1, Oc1ccncc1 to produce O=C(Cn1ccc(=O)cc1)OC(c1ccccc1)c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.