Using C1COCCN1, CC(C)n1nc(C(=O)OC(C)(C)C)cc1C=O to produce CC(C)n1nc(C(=O)OC(C)(C)C)cc1CN1CCOCC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.