Using O=c1c2cc(Cl)ccc2nc(CCl)n1-c1ccccc1Cl, Nc1ncnc2nc[nH]c12 to produce Nc1ncnc2c1ncn2Cc1nc2ccc(Cl)cc2c(=O)n1-c1ccccc1Cl, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.