Spectrum VF-NPL-QEHF024197 for (1S,6R,10S,13S,14R,15R)-1,6-dihydroxy-8-(hydroxymethyl)-4,12,12,15-tetramethyl-13-[(2-methylbutanoyl)oxy]-5-oxotetracyclo[8.5.0.0²,⁶.0¹¹,¹³]pentadeca-3,8-dien-14-yl (2E)-2-methylbut-2-enoate