epi-Roridin E

(1′R,3′R,8′R,12′E,17′R,18′E,20′Z,24′R,25′S)-17′-[(1S)-1-Hydroxyethyl]-5′,13′,25′-trimethyl-11′H,22′H-spiro[oxirane-2,26′-[2,10,16,23]tetraoxatetracyclo[22.2.1.0~3,8~.0~8,25~]heptacosa[4,12,18,20]tetra ene]-11′,22′-dione

(4E,9R,10E,12Z,16R,18R,19aR,23aR)-9-[(1S)-1-hydroxyethyl]-5,16a,21-trimethyl-6,7,16,16a,22,23-hexahydro-3H,18H,19aH-spiro[16,18-methano[1,6,12]trioxacyclooctadecino[3,4-d]chromene-17,2′-oxirane]-3,14(9H)-dione

epi-Roridin E

Epiroridin E