2-oxopropyl-CoM reductase (carboxylating); NADPH:2-(2-ketopropylthio)ethanesulfonate oxidoreductase/carboxylase; NADPH:2-ketopropyl-coenzyme M oxidoreductase/carboxylase; 2-mercaptoethanesulfonate,acetoacetate:NADP+ oxidoreductase (decarboxylating)