Using O=C1CC=Nc2cc(Cl)ccc21, CC1CN(C(=O)OC(C)(C)C)CCN1 to produce CC1CN(C(=O)OC(C)(C)C)CCN1c1ccnc2cc(Cl)ccc12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.