1. Program for Collaborative Research in the Pharmaceutical Sciences, and the Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, Chicago, Illinois 60612, Research Center for Chemistry, Indonesian Institute of Science, Serpong, 15310 Tangerang, Indonesia, and Herbarium Bogoriense, Research Center for Biology, Indonesian Institute of Science, 16122 Bogor, Indonesia