Using O=C(NC1C(O)CCCC1O)[C@H](CS(=O)(=O)Cc1ccccc1)NC(=O)N1CCOCC1 to produce O=C1CCCC=C1NC(=O)[C@H](CS(=O)(=O)Cc1ccccc1)NC(=O)N1CCOCC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.