InChI=1/C7H10O/c8-7-4-2-5-1-3-6(5)7/h5-6H,1-4H2/t5-,6-/m1/s bicyclo[3.2.0]heptan-2-one, (1R,5R)- rel-(1R,5R)-bicyclo[3.2.0]heptan-2-one