Using Cc1c(O)c(N)cc2c1CCN(C(=O)OC(C)(C)C)CC2, COC(C)(OC)OC to produce Cc1nc2cc3c(c(C)c2o1)CCN(C(=O)OC(C)(C)C)CC3, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.