1. JST ERATO; Lipid Active Structure Project; Machikaneyama, Toyonaka Osaka 560-0043 Japan
2. Department of Chemistry, Graduate School of Science; Osaka University; Machikaneyama, Toyonaka Osaka 563-0043 Japan
3. Department of Chemistry, Faculty and Graduate School of Sciences; Kyushu University; 744 Motooka, Nishi-ku Fukuoka 819-0395 Japan