Using CC1(O)CN(N=Cc2cccnc2)C(=O)N1N=Cc1cccnc1 to produce Cc1cn(N=Cc2cccnc2)c(=O)n1N=Cc1cccnc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.