Using N=C(N)NN, CC(=O)CCC1=C(CCC(C)=O)C(=O)c2ccccc2C1=O to produce CC(CCC1=C(CCC(C)=NNC(=N)N)C(=O)c2ccccc2C1=O)=NNC(=N)N, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.