201990-21-8 4,21,27,43-Hexatetracontatetraene-1,12,15,45-tetrayne-3,14-diol, (R-(R*,R*-(4E,21Z,27Z,43Z)))- 4,21,27,43-Hexatetracontatetraene-1,12,15,45-tetrayne-3,14-diol,(3R,4E,14R,21Z,27Z,43Z)- Petrocortyne A