1,3-Dihydro-4-(2-(3-(t-butylamino)-2-hydroxypropoxy)benzoyl)-2H-indol-2-one fumarate (2:1) 133994-65-7 2H-Indol-2-one, 1,3-dihydro-4-(2-(3-((1,1-dimethylethyl)amino)-2-hydroxypropoxy)benzo)-, (E)-2-butenedioate (2:1) (salt)