You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule with [(3aR,4R,6S,6aR,9aR,9bR)-9-methyl-3-methylidene-2-oxospiro[4,5,6a,7,9a,9b-hexahydro-3aH-azuleno[4,5-b]furan-6,2'-oxirane]-4-yl] furan-3-carboxylate as the IUPAC name, what is the corresponding SMILES representation?
user
C=C1C(=O)OC2C1C(OC(=O)C1=COC=C1)CC1(CO1)C1CC=C(C)C21
assistant