Using CC(=O)C1(C(=O)N[C@H](C)c2ccccc2)CCC1, OCCO to produce C[C@@H](NC(=O)C1(C2(C)OCCO2)CCC1)c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.