Using CC(=O)OC(C(=O)Nc1ccc(C(=O)N2Cc3cccn3Cc3ccccc32)cc1)c1ccccc1 to produce O=C(Nc1ccc(C(=O)N2Cc3cccn3Cc3ccccc32)cc1)C(O)c1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.