Using NNC(N)=S, O=C(CCC(=O)c1ccccc1)NCc1ccccc1 to produce NC(=S)NN=C(CCC(=O)NCc1ccccc1)c1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.