Using COC(CCBr)OC, Cc1nc(C)c(-c2c[nH]c(=O)[nH]c2=O)s1 to produce COC(CCn1cc(-c2sc(C)nc2C)c(=O)[nH]c1=O)OC, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.