These Estrogen-structure based molecules have the ability to kill cancer cells of all stages of breast cancer. Other existing estrogen-based or estrogenic anticancer molecule acts against estrogen receptor (ER)-expressing breast cancer cells only. So, this molecule is 'fit-for-all' breast cancerphenotypes, These molecules have anticancer effect against other ER-expressing cancer cells, such as ovarian carcinoma, melanoma, pancreatic cancer, It is orally administrable (whereas estrogenic, anti-breast cancer drug FaslodexTM is intramuscularly injectable only). Hence, it holds the promise to become the first oral breast cancerdrug developed from India