1HVR:
reference: Rational design of potent, bioavailable, nonpeptide cyclic ureas as HIV protease inhibitors., Lam PY, Jadhav PK, Eyermann CJ, Hodge CN, Ru Y, Bacheler LT, Meek JL, Otto MJ, Rayner MM, Wong YN, et al., Science 1994 Jan 21;263(5145):380-4. PMID: 8278812

This OCA Structure page
uses Jmol, developed by the Jmol Development Team (documentation).