Using CC(C)(C)OC(=O)N1CCNC[C@@H]1C(=O)O, CCI to produce CCN1CCN(C(=O)OC(C)(C)C)[C@@H](C(=O)O)C1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.