Using CC1(C)CCC(C)(C)c2cc(NC(=O)c3ccc(CO)cc3)ccc21 to produce CC1(C)CCC(C)(C)c2cc(NC(=O)c3ccc(C=O)cc3)ccc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.