Using O=C(CC1CCN(C(=O)OCc2cc(Cl)cc(Cl)c2)CC1)NCCc1cn(Cc2ccccc2)nn1 to produce O=C(CC1CCN(C(=O)OCc2cc(Cl)cc(Cl)c2)CC1)NCCc1c[nH]nn1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.