allopregnanolone, molecular structures, neurosteroid, 3d model, structural chemical formula and atoms with color coding

allopregnanolone brexanolone molecular structure chemical formula model neurosteroid c21h34o2 atom carbon oxygen hydrogen molecule threedimensional anxiety depression laboratory research chemistry drug pharmacy biology science composition medical medicine education atomic hormone skeletal chain illustration compound symbol line icon organic endogenous epilepsy gaba neuroprotective pregnane prosexual receptor sedative seizures tetrahydroprogesterone thp structures structural atoms color coding