SMILES: CC[C@]1(CCC2C1(CCC3C2CCC4C3(CCCC4)C)C)O
Description: The molecule is any C21-steroid carrying a hydroxy substituent at the 17alpha-position. Note that individual examples may have ring substituents at other positions and/or contain double bonds, aromatic A-rings, expanded/contracted rings etc., so the formula and mass may vary from that given for the generic structure. It is a C21-steroid and a 17alpha-hydroxy steroid.