Using CC(c1ccc(N)c(N)c1)n1ccnc1, CCOC(=N)c1cccnc1 to produce CC(c1ccc2[nH]c(-c3cccnc3)nc2c1)n1ccnc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.