Using O=C(CCC(=O)c1ccccc1)c1ccccc1, N=C(N)NN to produce N=C(N)NN=C(CCC(=NNC(=N)N)c1ccccc1)c1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.