Using COC(=O)c1nc2c(o1)CNC(C(=O)OC(C)(C)C)C2 to produce CC(C)(C)OC(=O)C1Cc2nc(C(=O)[O-])oc2CN1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.