Using CC(=O)OC(C)=O, CC1=C(CCCCOC2CCCCO2)CCCC1CCCO to produce CC(=O)OCCCC1CCCC(CCCCOC2CCCCO2)=C1C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.