Using OCCO, N#CC1(c2ccc(OCc3ccccc3)cc2)CCC(=O)CC1 to produce N#CC1(c2ccc(OCc3ccccc3)cc2)CCC2(CC1)OCCO2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.