IUPAC:(1'S,3S,4'S,7'R,8'S,11'R)-6'-ethyl-11'-hydroxy-1-methoxy-1,2-dihydro-10'-oxa-5'-azaspiro[indole-3,2'-tricyclo[5.3.1.0^{4,8}]undecan]-5'-en-2-one
IUPAC:(1'S,3S,4'S,7'R,8'S,11'R)-6'-ethyl-11'-hydroxy-1-methoxy-1,2-dihydro-10'-oxa-5'-azaspiro[indole-3,2'-tricyclo[5.3.1.0^{4,8}]undecan]-5'-en-2-one