Using COC(OC)OC, CC(C)(C)OC(=O)N1CCC(Nc2cc(Br)ccc2N)C1 to produce CC(C)(C)OC(=O)N1CCC(n2cnc3ccc(Br)cc32)C1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.