Using O=[N+]([O-])c1ccc(C2CCNCC2)cc1, CC(C)(C)OC(=O)OC(C)(C)C to produce CC(C)(C)OC(=O)N1CCC(c2ccc(N)cc2)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.