Using O=C1Nc2cc(Cl)ccc2C1c1ccc2ccccc2c1, Clc1cccc(CBr)c1 to produce O=C1Nc2cc(Cl)ccc2C1(Cc1cccc(Cl)c1)c1ccc2ccccc2c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.