Using O=C(O)CC(O)(CC(=O)O)C(=O)O, Cc1cnc(NS(=O)(=O)c2cccc(Cl)c2Cl)c(Br)n1 to produce Cc1cnc(NS(=O)(=O)c2cccc(Cl)c2Cl)c(OCc2ccco2)n1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.