Using O=c1c2cn(Cc3ccc(-n4cccn4)cc3)c3ccccc3c-2nn1-c1c(Cl)cncc1Cl to produce O=c1c2cn(Cc3ccc(-n4cccn4)cc3)c3ccccc3c-2nn1-c1ccncc1Cl, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.