Using Brc1cnc2cnccn12, CC(C)(C)OC(=O)N(C(=O)OC(C)(C)C)c1nccc2cc([Sn](C)(C)C)oc12 to produce Nc1nccc2cc(-c3cnc4cnccn34)oc12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.