Siddiqui was a leading Pakistani scientist credited with the isolation of unique chemical compounds from various South Asian plants, particularly the neem tree. The extracts of this tree, a broad-leaved evergreen native to India and Myanmar, have been used for centuries in Asia as pesticides, medicines, and health tonics. In the 21st century, knowledge of the neem tree spread to the West, where it has been hailed as a “wonder plant,” largely due to the work of Siddiqui, who discovered what else? Discuss