Using COC(CCBr)OC, Cc1nc(-c2c[nH]c(=O)[nH]c2=O)cs1 to produce COC(CCn1cc(-c2csc(C)n2)c(=O)[nH]c1=O)OC, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.