1. The compound represented by formula (1), or its salt:! [Chemical formula 14]! ! [in the formula (1) Cy represents an aryl group, a saturated cyclic hydrocarbon group or a saturated heterocyclic group,! X represents a carbon atom or a nitrogen atom,! Y represents a carbon atom, a nitrogen atom, an oxygen atom or a sulfur atom,! R1, R2, R3 may be the same or different from each other, and each of them independently represents a hydrogen atom, a halogen atom, an alkyl group which may be substituted, an alkenyl group which may be substituted, an alkynyl group which may be substituted, an aryl group which may be substituted, an aralkyl group which may be substituted, a hydroxy group, an alkoxy group which may be substituted, an aryloxy group which may be substituted, an alkylthio group, an acyl group, an acyloxy group, and kilsulfinyl group, alkylsulfonyl group, alkylcarbamyl group, -N (RP1) (RP2) (RPl and RP2 may be the same or different from each other, and each independently represents a hydrogen atom, an alkyl group that may be substituted, or an aryl group, which may be substituted, or RP1 and RP2 together form a 3-7 membered ring, which is a cyclic amine N (RP1) (RP2)), an acylamino group, an acyl (alkyl) amino group, an alkylsulfonylamino group, an alkylsulfonyl (alkyl) amino group, a carboxy group, -CON (RP3) (RP4) (RP3 and RP4 can be one different or different from each other, and each independently represents a hydrogen atom, an alkyl group which may be substituted, or an aryl group which may be substituted�1. Соединение, представленное формулой (1), или его соль: ! [Химическая формула 14] ! ! [в формуле (1) Cy представляет собой арильную группу, насыщенную циклическую углеводородную группу или насыщенную гетероциклическую группу, ! X представляет собой атом углерода или атом азота, ! Y представляет собой атом углерода, атом азота, атом кислорода или атом серы, ! R1, R2 R3 могут быть одинаковыми или отличными друг от друга, и каждый из них независимо пр
