Using COC(=O)c1cn(CCNC(=O)OC(C)(C)C)c(Cl)c1-c1cccc(C#N)c1 to produce COC(=O)c1cn(CCN)c(Cl)c1-c1cccc(C#N)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.