1-alpha-H,5-alpha-H-Tropan-3-alpha-ol, 2-(4-hydroxy-3-(phenylazo)phenyl)-3-phenylacrylate(ester), hydrate (4:1) 3-Phenyl-2-(p-hydroxy-m-phenylazophenyl)acrylic acid 3-tropanyl ester hydrate 34146-35-5