Using O=C(NC1CC(O)C(O)C1)[C@H](CS(=O)(=O)Cc1ccccc1)NC(=O)N1CCOCC1 to produce O=C1CC(NC(=O)[C@H](CS(=O)(=O)Cc2ccccc2)NC(=O)N2CCOCC2)CC1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.