Using O=C(c1cnc(NC(=O)C2(c3ccc4c(c3)OCO4)CC2)s1)c1ccccc1Cl to produce O=C(Nc1ncc(C(O)c2ccccc2Cl)s1)C1(c2ccc3c(c2)OCO3)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.