Using CC(=O)C1(c2n[nH]c3ccc(NC(=O)c4ccccn4)cc23)C=CC=CC1 to produce O=C(Nc1ccc2[nH]nc(-c3ccccc3)c2c1)c1ccccn1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.