Using CC(C)(O)c1nc2c(N3CCOCC3)nc(Cl)nc2s1, CCOC(C)=O to produce COC(C)(C)c1nc2c(N3CCOCC3)nc(Cl)nc2s1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.