C=C(C)[C@H](C)/C=C/C(C)C1CC[C@]23O[C@]24C=C[C@@]25C[C@@H](C)CC[C@]2(C)[C@]4(CC[C@]13C)OO5 5α,9α-epidioxy-8β,14β-epoxy-(22E)-ergosta-6,22,25(26)-trien-3β-ol