Claim 1: a compound of formula (1) or formula salt, wherein ring a represents a group of formula (2),（3）O（4）；A1 representative-c (r8308 No. 74919) (r8308； 74919)；-C（R8308；=7491）；-N（R8308；74955）-，-N-O-O-SA2 stands for - C (R83087880) (R8308； (758080) -,-C（R8308；=7580）=U-O-；A3 = for - C (r83080； - 758080) (r8308； - 758080)；-C（R8308；=7580）=U-O-；A8308OLA-C（R8308；；74919）（R8308；-74919）；-C（R8308；=7491）；-N-O-O-SA830909OA-C（R8308；；74919）（R8308；-74919）；-C（R8308；=7491）；-N（R8308；74955）-，-N-O-O-SA8310 represents - C (r8308；； 758080) (r8308；； 758080) - O-C (r8308；； 758080) =；A8311a stands for - C (r8308；； 74919) (r8308； - 74919)；-C（R8308；=7491）；-N-O-O-SA831222 represents - C (r8308；； 74919) (r8308； - 74919)；-N（R8308；74955）-，-O-O-SA8313 stands for - C (r8308；； 758080) (r8308； - U-O -；A1-830404 represents - C (r8308； - 758080) (r8308； - U-O -；A1 1 representative-C（R8308；（758080）（R8308；（758080）-U-O-；A1 2 representative-C（R8308”；（R8308；-74919）；-O-O-SWhere formula group (2),Formula group (3) and formula group (4) do not contain adjacent oxygen atoms, adjacent oxygen and sulfur atoms or adjacent oxygen and nitrogen atoms, or a selected group of other parts composed of n-c-n, n-c-s, s-c-s, o-c-n, O-C-O and o-c-s. in each case, the remaining carbon atoms in n-c-n and n-c-s, S-c-s, o-c-n, O-C-O and o-c-s saturation； B 1,B.，B ° and B ° 830808 independently represent C (R3) or N, not more than 2 of which are B1,B.，B ° and B ° 830808m represent n； X represents - CH (r83099) -,-C（R83099）=1-C（o）-o-oWhen x stands for - CH (r83099),-C（o）-U（o）When X represents - C (r83099) =, the dotted line represents a simple connection.a. Point line represents double connection； R1 represents c83218833162622 leased land independently；a. Halogenated tar c833218d83316262 or c833218d83316262；a. One or two carbon atoms are independently replaced by - O -, and the rest of the tar can be replaced by one or more halogens； R2 represents halogen, cyanogen, hydroxyl, mercato, and hydrocarbyl c83321833126；Options 1 to 5
