Using O=C1CN(C(=O)OCc2ccccc2)CCN1, BrCc1ccccc1 to produce O=C1CN(C(=O)OCc2ccccc2)CCN1Cc1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.