Using Cc1nnc2c(Br)cccn12, C=C(C(=O)OCc1ccccc1)[Sn](CCCC)(CCCC)CCCC to produce C=C(C(=O)OCc1ccccc1)c1cccn2c(C)nnc12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.