Using CC(C)(C)OC(=O)N1CCC(N)CC1, O=C(O)CCC(=O)C1CCCC1 to produce CC(C)(C)OC(=O)N1CCC(NC(=O)CCC(=O)C2CCCC2)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.