Using CC(=O)OCC1Cn2c(c3c(c(O)c2=O)C(=O)N(Cc2ccc(F)c(Cl)c2)CC3)C(=O)O1 to produce O=C1OC(CO)Cn2c1c1c(c(O)c2=O)C(=O)N(Cc2ccc(F)c(Cl)c2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.