Using O=C(O)Cc1ccccc1, Nn1nc(N2CCOCC2)c2ccccc2c1=O to produce O=C(Cc1ccccc1)Nn1nc(N2CCOCC2)c2ccccc2c1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.