Using CCOC(=O)c1cnc(CC)nc1O, CCOC(=O)c1cnc(C(C)(C)C)nc1O to produce CCOC(=O)c1cnc(C(C)(C)C)nc1OCC, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.