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