Using CC(C)Br, COC(=O)C1(NC(=O)c2cccc(C)c2O)CCSCC1 to produce COC(=O)C1(NC(=O)c2cccc(C)c2OC(C)C)CCSCC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.