Using CN(C)C=O, CC(C)(C)OC(=O)N1CCC[C@H]1c1ncc(Br)n1COCC[Si](C)(C)C to produce CC(C)(C)OC(=O)N1CCC[C@H]1c1ncc(C=O)n1COCC[Si](C)(C)C, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.