Using CC(=O)C1=NNC(C)c2cc(-c3cc(C(=O)NC4CC4)ccc3C)ccc21 to produce CC(=O)c1nnc(C)c2cc(-c3cc(C(=O)NC4CC4)ccc3C)ccc12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.