Using COC(=O)CS, CC(C)(C)Cc1nc2cc(Br)ccc2n1CC1CCOCC1 to produce COC(=O)CSc1ccc2c(c1)nc(CC(C)(C)C)n2CC1CCOCC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.