Using CC(C)(C)OC(=O)N1CCNCC1, COc1ccc(C=O)cn1 to produce COc1ccc(CN2CCN(C(=O)OC(C)(C)C)CC2)cn1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.