1-Deoxy-1-ketocoriolin 74399-38-5 Spiro(cyclopenta(4,5)pentaleno(1,6a-b)oxirene-3(3aH),2'-oxirane)-2,4(1aH,3bH)-dione, tetrahydro-7-hydroxy-3a,5,5-trimethyl-, (1aS-(1aalpha,3beta,3abeta,3balpha,6aalpha,7beta,7aS*))-