Using Cc1nc(Br)c(C=O)n1COCC[Si](C)(C)C, CCOC(=O)CS to produce CCOC(=O)c1cc2c(nc(C)n2COCC[Si](C)(C)C)s1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.