Using Cn1cncn1, CCC(CC)c1cc(C)nc2c(-c3sc(Br)nc3Br)c(C)nn12 to produce CCC(CC)c1cc(C)nc2c(-c3sc(-c4ncnn4C)nc3Br)c(C)nn12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.