Formula: C22H27NO8 | Mol. Weight: 433.50 g/mol
IUPAC: (Z)-3-[(2R,3S,3aS,8aR)-3-ethyl-4'-methyl-4,5'-dioxospiro[3,3a,6,7,8,8a-hexahydrofuro[3,2-c]azepine-2,2'-furan]-5-yl]-3-[(2S,4S)-4-methyl-5-oxooxolan-2-yl]prop-2-enoic acid
CCC1C2C(CCCN(C2=O)C(=CC(=O)O)C3CC(C(=O)O3)C)OC14C=C(C(=O)O4)C