163020-88-0 2H-Cycloocta(b)pyran-2-one, 5,6,7,8,9,10-hexahydro-4-hydroxy-3-(1-phenylpropyl)- 5,6,7,8,9,10-Hexahydro-4-hydroxy-3-(1-phenylpropyl)-2H-cycloocta(b)pyran-2-one HHPP-CPO