Using Cn1cnc(-c2ccc(C3=CCNCC3)nc2)n1, O=C(Cl)CCl to produce Cn1cnc(-c2ccc(C3=CCN(C(=O)CCl)CC3)nc2)n1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.