Using CC(C)(C)OC(=O)N1CCc2ncn(C(=O)OC(C)(C)C)c2CC1 to produce CC(C)(C)OC(=O)N1CCc2nc[nH]c2CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.