Using CCN1C(=O)CC(C)(C)c2cc(C)c(-c3cc(C=O)ccc3OC)cc21 to produce CCN1C(=O)CC(C)(C)c2cc(C)c(-c3cc(C=O)ccc3O)cc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.