Using Cn1ncnc1COc1nc2c(cnn2-c2ccccc2)cc1Br, C[Sn](C)(C)C to produce Cc1cc2cnn(-c3ccccc3)c2nc1OCc1ncnn1C, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.