Using O=Cc1c(O)c(Cl)cc2c(=O)c(-c3ccc(Br)cc3)coc12, NO to produce O=Cc1c(O)c(Cl)cc(-c2oncc2-c2ccc(Br)cc2)c1O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.