Using CCCCCCO, COC(=O)CCCC(C)(C)c1cc(O)c(C(C)(C)C)cc1O to produce CCCCCCOC(=O)CCCC(C)(C)c1cc(O)c(C(C)(C)C)cc1O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.