Using ClCc1cn2cc(Cl)ccc2n1, O=c1[nH]c2ccccc2n1C1CCNCC1 to produce O=c1[nH]c2ccccc2n1C1CCN(Cc2cn3cc(Cl)ccc3n2)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.