spiro(4-benzyloxy-2,3-isopropylidenedioxy-1-oxa-cyclopentane-5,5'-(2-benzoylmethylene-1,3-diazacyclohexane))
spiro(4-benzyloxy-2,3-isopropylidenedioxy-1-oxa-cyclopentane-5,5'-(2-benzoylmethylene-1,3-diazacyclohexane))