[1] Univ Calif San Diego, La Jolla, CA 92093 USA
[2] Univ Calif San Diego, Chem & Biochemisty, La Jolla, CA 92093 USA
[3] Univ Calif San Diego, Chem & Biochem, San Diego, CA 92103 USA
[4] Univ Zurich, OCI, Zurich, Switzerland
[5] Hollander Horizon Int, Redondo Beach, CA USA