Using CC(C)(C)c1cc2c(c(C(C)(C)C)c1)OC(=O)C2O to produce CC(C)(C)c1cc2c(c(C(C)(C)C)c1)OC(=O)C2=C1C(=O)Oc2c1cc(C(C)(C)C)cc2C(C)(C)C, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.