Formula: C21H24N2O5 | Mol. Weight: 384.40 g/mol
IUPAC: methyl (1S,4aS,5aS,6S,10aS)-5'-hydroxy-1-methyl-2'-oxospiro[1,4a,5,5a,7,8,10,10a-octahydropyrano[3,4-f]indolizine-6,3'-1H-indole]-4-carboxylate
CC1C2CN3CCC4(C3CC2C(=CO1)C(=O)OC)C5=C(C=CC(=C5)O)NC4=O