Using COC(=O)C1(NC(=O)c2ccc(OC)c(OCCc3cccc(C)c3)c2)CCC2(CC1)OCCO2 to produce COC(=O)C1(NC(=O)c2ccc(OC)c(OCCc3cccc(C)c3)c2)CCC(=O)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.