Using CN1CCNCC1, Cn1cc(Br)cc(N(C(=O)OC(C)(C)C)c2ccc(C=O)cn2)c1=O to produce CN1CCN(Cc2ccc(N(C(=O)OC(C)(C)C)c3cc(Br)cn(C)c3=O)nc2)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.