Naman Ramachandran “RRR” screenwriter K.V. Vijayendra Prasad will pen the script of “1770 – Ek Sangram,” a big-budget adaptation of Bankim Chandra Chatterjee’s 1882 Bengali-language novel “Anandamath” (aka “The Abbey of Bliss”).Set in 1770, the story takes place against the backdrop of the Sannyasi Rebellion when a brotherhood of monks banded together to fight the ruling British East India Company. “Vande Mataram,” which was later adopted as India’s national song, was first published in “Anandamath.” Friday (Apr.