Synonyms: 16,24-Cyclo-13,14-secoergost-3-ene-18,26-dioicacid, 2,5-epidioxy-14,17:14,27-diepoxy-6,13,20,22-tetrahydroxy-1,15-dioxo-, g-lactone d-lactone, (2b,5b,6b,14a,16b,22a,25S)-;2H-7,11-(Epoxymethano)-2,4a-etheno-7,9:10,14-dimethano-7H-[1,2]dioxino[4,3-h]oxocino[3',4':2,3]furo[3,4-c][2]benzoxocin-1,12,16,22(5H,9H,16aH)-tetrone,6,6a,10,11,14,14a,17,18,18a,18b-decahydro-5,16a-dihydroxy-10,14a,18b-trimethyl-,[2R-(2a,4aa,5b,6ab,7a,8aR*,9b,10b,11a,14b,14aa,16aa,18aa,18bb)]-; Physalin Q