Using O=CC(=O)O, COC(=O)CCCC(C)(C)c1ccc(O)c(C(C)C)c1 to produce COC(=O)CCCC(C)(C)c1cc(C(C)C)c2c(c1)C(O)C(=O)O2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.