Using CCCCCCCCCCCCC(O)C1=CC(=O)OC1C, CC(=O)OC(C)=O to produce CCCCCCCCCCCCC(OC(C)=O)C1=CC(=O)OC1C, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.