Using CC1(C)CC(C(=O)O)N(C(=O)OC(C)(C)C)C1, O=C1CCC(=O)N1O to produce CC1(C)CC(C(=O)ON2C(=O)CCC2=O)N(C(=O)OC(C)(C)C)C1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.