Using CC(C)(C)OC(=O)NN1C(=O)c2ccccc2C1=O, CC(C)OC(=O)N=NC(=O)OC(C)C to produce CCN(C(=O)OC(C)(C)C)N1C(=O)c2ccccc2C1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.