1. Department of Chemical and Biomolecular Engineering, Vanderbilt University, Nashville, Tennessee 37212, United States
2. Multiscale Modeling and Simulation Center, Vanderbilt University, Nashville, Tennessee 37212, United States
3. GlaxoSmithKline Consumer Health Care, 184 Liberty Corner Road, Suite 200, Warren, New Jersey 07059, United States
4. Department of Chemistry, Vanderbilt University, Nashville, Tennessee 37212, United States