Using CC1CCC(C(C)C)C(OC(=O)CC(C#N)(NC(=O)OCc2ccccc2)C(=O)OC(C)(C)C)C1, CC(C)=O to produce CC1CCC(C(C)C)C(OC(=O)CC(NC(=O)OCc2ccccc2)(C(N)=O)C(=O)OC(C)(C)C)C1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.