Using Cc1c(C(=O)CN2CCN(C(=O)OC(C)(C)C)CC2=O)ccc2c1COC2=O to produce Cc1c(C(O)CN2CCN(C(=O)OC(C)(C)C)CC2=O)ccc2c1COC2=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.