I would like to use SMARTs to search for chirality atom center. The followings are the SMARTs I used.

However, none of the two SMARTs works. The first SMARTs can be parsed correctly but it cannot identify chiral carbon center. JOELib reported error for the the second SMARTs. The chiral center of atoms in the given molecule is setted correctly because IsChiral function of JOEAtom returns true for the carbon atom.
I am using JOELib 2004/08/27 version. Any help is appreciated.
Best regards,

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