Using CC(C)(C)OC(=O)N1CC[C@H](NC(=O)COCCOCc2ccccc2)C1 to produce CC(C)(C)OC(=O)N1CC[C@H](NC(=O)COCCO)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.