40980-51-6 NONANOIC ACID, 9-((3-METHYL-1-OXO-4-(TETRAHYDRO-3,4,5-TRIHYDROXY-5-((3-(2-HYDROX Nonanoic acid, 9-((3-methyl-1-oxo-4-(tetrahydro-3,4,5-trihydroxy-5-((3-(2-hydroxy-1-methylpropyl)oxiranyl)methyl)-2H-pyran-2-yl)-2-butenyl)oxy)- Pseudomonic acid B Pseudomonic acid I