Using CCCc1nc(CC)c2c(=O)[nH]c(-c3ccccc3OCC)nn12, O=C(Br)CBr to produce CCCc1nc(CC)c2c(=O)[nH]c(-c3cc(C(=O)CBr)ccc3OCC)nn12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.