Using Cc1cc2c(Br)n[nH]c2cn1, C=C(OCC)[Sn](CCCC)(CCCC)CCCC to produce CC(=O)c1n[nH]c2cnc(C)cc12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.