ed heterocyclic group; n and m each denotes an integer of 0 to 4; when n is larger than 1, the plurality of R11 may bind to each other to form a ring; when m is larger than 1, the plurality of R12 may bind to each other to form a ring; A denotes oxygen or SO2; and the substituent is a halogen, an alkyl group having 1 to 6 carbon atoms, an alkoxy group having 1 to 6 carbon atoms, an alkyl halide gr