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