Using Cc1c(N2CCN(C(=O)OC(C)(C)C)CC2)nnn1-c1ccccc1 to produce Cc1c(N2CCN(C(=O)OC(C)C)CC2)nnn1-c1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.