Using CC(=O)OCCCn1c(S(C)(=O)=O)nc2cnc3cc(Br)ccc3c21 to produce Brc1ccc2c(c1)ncc1nc3n(c12)CCCO3, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.