Using OCc1nc2c(N3CCOCC3)ccnn2c1Br, Clc1ccc2ccccc2n1 to produce Brc1c(COc2ccc3ccccc3n2)nc2c(N3CCOCC3)ccnn12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.