Using O=C1C(=Cc2ccccc2)C(NC2CCCCC2)c2ccccc21 to produce OC1C(=Cc2ccccc2)C(NC2CCCCC2)c2ccccc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.