Using OB(O)c1cc2ccccc2s1, NC(=O)c1ccc2c(c1)c(Br)nn2C1CCCCO1 to produce NC(=O)c1ccc2c(c1)c(-c1cc3ccccc3s1)nn2C1CCCCO1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.