acitretin molecule, molecular structures, second-generation retinoid, 3d model, structural chemical formula and atoms with color

acitretin neotigason secondgeneration retinoid resistant psoriasis molecule molecular structure chemical formula 3d model c21h26o3 atom chemistry dermatology hydrogen atomic carbon oral oxygen skeletal dermatologist drug organic generic health science acitretine etretinate retinoic medicine composition care pharmaceutical pharmacology disease healthcare pharmacy treatment biochemistry therapy acne structural