Using CNc1ncnc2nc[nH]c12, ClCCCN1CCN(c2ccccc2)CC1 to produce CNc1ncnc2c1ncn2CCCN1CCN(c2ccccc2)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.