Using N=C(N)NN, Cc1ccccc1C1=CC(=O)c2c(C)ccnc21 to produce Cc1ccccc1C1=CC(=NNC(=N)N)c2c(C)ccnc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.