C=C1[C@@H](C)[C@H]2[C@H](Cc3c[nH]c4ccccc34)NC(=O)[C@]23C(=O)C[C@@H]2C(=O)C(O)=C(C)[C@@H]2[C@@H](C)C/C=C/[C@H]3[C@@H]1O cytoglobosin A