Phytochemical Analysis, In-Vitro, and In-Vivo Study on Antioxidant Effect of Peppermint (Mentha piperita (L.)) Leaf in on-stress Sprague Dawley Rats = Analisis Fitokimia, Studi In-Vitro, dan In-Vivo tentang Efek Antioksidan Peppermint (Mentha piperita (L.)) Daun pada Tikus Sprague Dawley yang Stress