Using CC(C)(C)OC(=O)NC(=N)N, COC(=O)CCCC(=O)CBr to produce COC(=O)CCCc1cn(C(=O)OC(C)(C)C)c(N)n1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.