| http://www.w3.org/ns/prov#value | - lower alkoxycarboyl and piperidinyl, R11 is a hydrogen atom or a lower alkyl, R12 is a cycloalkyl, or a phenyl which has optionally 1 to 3 substituents selected from a lower alkoxy, a lower alkyl and a halogen atom, W is a group of the formula: --(CH2)p -- wherein p is an integer of 3 to 5, or a group of the formula: --CH???CH--(CH2)q -- wherein q is an integer of 1 to 3, the carbon atom of these
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