Using NCCN, N#Cc1cc(Oc2ccc(Nc3cc(-c4ccccc4)nc(N)n3)cc2)ccn1 to produce Nc1nc(Nc2ccc(Oc3ccnc(C4=NCCN4)c3)cc2)cc(-c2ccccc2)n1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.