Using CC(C)(C)OC(=O)Nc1ccc(CN2CCNCC2(C)C)cn1, O=C([O-])[O-] to produce CN1CCN(Cc2ccc(NC(=O)OC(C)(C)C)nc2)C(C)(C)C1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.