Using NCCNc1nc(Cl)nc2c1ncn2C1CCCC1, O=Cc1cccc(Cl)c1 to produce Clc1cccc(CNCCNc2nc(Cl)nc3c2ncn3C2CCCC2)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.