When L represents ???N(???R11)???, preferably, M represents ???O???. [0151] An example of prefer red group (viii) is a group wherein w is an integer of 1 to 3, L represents ???O???, M represents ???O??? or ???C(???O)???O???, and R22 represents optionally substituted phenyl. [0152] Examples of preferred compounds represented by formula (I) according to the present invention include the following co