Using Cc1ncc2n1C(=O)N(C1CCN(C(=O)C(N)c3ccccc3)CC1)C2, O=C=Nc1ccccc1 to produce Cc1ncc2n1C(=O)N(C1CCN(C(=O)C(NC(=O)Nc3ccccc3)c3ccccc3)CC1)C2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.