The molecule is a macrocyclic lactam isolated from the marine sponge Ianthella and has been shown to exhibit calcium channel modulatory activity. It has a role as a metabolite and a calcium channel modulator. It is a cyclic ether, a ketoxime, a lactam, a macrocycle, an organobromine compound and a polyphenol.
(8E,12E,25E)-4,16,21,31,36-pentabromo-17,32-dihydroxy-12,25-bis(hydroxyimino)-2,19-dioxa-10,27-diazapentacyclo[28.2.2.220,23.13,7.114,18]octatriaconta-1(32),3,5,7(38),8,14(37),15,17,20(36),21,23(35),30,33-tridecaene-11,26-dione