Complex sentence: Camilla Erculiani (d. post- 1584) was an Italian apothecary, writer, and women's advocate in the late sixteenth century who published a book, in the form of letter-essays, about her views on issues of science and natural philosophy.
Split into simpler sentences: Camilla Erculiani (d. post- 1584) was an Italian apothecary, writer, and women's advocate in the late sixteenth century. This "self-described pharmacist" published a book, in the form of letter-essays, about her views on topics of science and natural philosophy.