Using N=C(N)Nc1nc2c(s1)CNCC2, O=C=Nc1ccccc1 to produce N=C(N)Nc1nc2c(s1)CN(C(=O)Nc1ccccc1)CC2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.