Using COc1ccc2c(c1C1=CCN(C(=O)OC(C)(C)C)CC1)OCC2=O to produce COc1ccc2c(c1C1CCN(C(=O)OC(C)(C)C)CC1)OCC2=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.