... manfacture of (3b,5b,15a,16a)-15,16-Dihydro-3,5-dihydroxy-3'H-cycloprop[15,16]androsta-6,15-dien-17-one 2 .CAS #: 82543 ... ,16a)-Molecular Structure Molecular FormulaC20H28O3 3'H-Cycloprop[15,16]androsta-6,15-dien-17-one,15,16-dihydro-3,5-dihydroxy-, (3b,5b,15a,16a ... hear from you. (3b,5b,15a,16a)-15,16-Dihydro-3,5-dihydroxy-3'H-cycloprop[15,16]androsta-6,15-dien-17-one (CAS #: 82543 ...