Using CC(C)(C)OC(=O)Nc1cccnc1C=O, CC(C)(C)OC(=O)NCCCCN to produce CC(C)(C)OC(=O)NCCCCNCc1ncccc1NC(=O)OC(C)(C)C, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.