Using Cc1ccc2c(-c3n[nH]c(=S)n3C)cccc2n1, ClCCCCBr to produce Cc1ccc2c(-c3nnc(SCCCCCl)n3C)cccc2n1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.