Using COC(=O)c1cnc2c(c1)N(C(=O)OC(C)(C)C)CCO2 to produce CC(C)(C)OC(=O)N1CCOc2ncc(C(=O)O)cc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.