Using CC(=O)N1CCNCC1, Cc1cc(C=O)cc(NC(=O)OC(C)(C)C)c1 to produce CC(=O)N1CCN(Cc2cc(C)cc(NC(=O)OC(C)(C)C)c2)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.