Using CON, CC(C)(C)OC(=O)N1CCN(C(=O)OCc2ccccc2)CC1C(=O)O to produce CONC(=O)C1CN(C(=O)OCc2ccccc2)CCN1C(=O)OC(C)(C)C, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.