1-Pyrrolidinecarboximidamide, 2-(21-(1-((2,5-dihydro-4-hydroxy-2-oxo-1H-pyrrol-3-yl)carbonyl)-1,2,4a,5,6,7,8,8a-octahydro-5,6-dihydroxy-1,3-dimethyl-2-naphthalenyl)-2,6,10,14,18-pentahydroxy-5,11,17,19-tetramethyl-4,8,12,16-heneicosatetraenyl)-