Compounds represented by the general formula (I) or pharmacologically acceptable salts thereof: (I) wherein Ar1 is phenyl or the like; Ar2 is phenylene or the like; R1 is C1-3 alkyl or the like; R2 and R3 are each C1-6 alkyl or the like; X is S- or the like; and p, q and r are each independently an integer of 0 to 2.
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机译：通式（I）表示的化合物或其药理学上可接受的盐：（I）其中Ar 1为苯基等; Ar 2为亚苯基等。 R 1为碳数1〜3的烷基等。 R 2和R 3分别为碳数1〜6的烷基等。 X为S-等。 p，q和r分别独立地是0到2的整数。
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