Using CC1(C)Cc2c(c(C(C)(C)C)cc(OC(=O)C(C)(C)C)c2C(C)(C)C)O1 to produce CC1(C)Cc2c(c(C(C)(C)C)cc(O)c2C(C)(C)C)O1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.