Using Nc1ccc(N)c2c1C(=O)c1ccccc1C2=O, Nc1cccc2c1C(=O)c1ccccc1C2=O to produce Nc1ccc(Nc2ccc(N)c3c2C(=O)c2ccccc2C3=O)c2c1C(=O)c1ccccc1C2=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.