Using O=C1CCN(C(=O)OCc2ccccc2)CC1, O=C(Nc1ccc(Br)cc1)OCc1ccccc1 to produce O=C(Nc1ccc(C2(O)CCN(C(=O)OCc3ccccc3)CC2)cc1)OCc1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.