Using CC(C)(C)OC(=O)N1CCNC(=O)C1, CC(C)(C)[Si](C)(C)OCCBr to produce CC(C)(C)OC(=O)N1CCN(CCO[Si](C)(C)C(C)(C)C)C(=O)C1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.