This long-chain fatty acid, derived from coconut oil, has demonstrated proven activity against Candida albicans and is reported to be an effective antifungal agent in the treatment of candidiasis. This fatty acid helps maintain the delicate balance of intestinal flora in the colon, keeping levels of Candida yeast in check. Although this fatty acid is toxic to yeast, it is safe for humans when used correctly. What is the name of this fatty acid?