Using CN1C(=O)C(C)(C)c2cc(Br)cnc21, C=C(OCC)[Sn](CCCC)(CCCC)CCCC to produce CC(=O)c1cnc2c(c1)C(C)(C)C(=O)N2C, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.