Using O=C1[C@H](NS(=O)(=O)c2ccc(Oc3ccc(Cl)cc3)cc2)CC=CCN1OCc1ccccc1 to produce O=C1[C@H](NS(=O)(=O)c2ccc(Oc3ccc(Cl)cc3)cc2)CC=CCN1O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.