Run this query on the instance hosting your SSRS databases to get list of SSRS subscriptions and their corresponding SQL Agent job names.
SELECT b.[name] "JobName" , e.[name] "ReportName" , e.[path] "ReportPath" , d.[description] "SubscriptionDescription" , a.SubscriptionID , laststatus , eventtype , LastRunTime , date_created , date_modified FROM ReportServer.dbo.ReportSchedule a JOIN msdb.dbo.sysjobs b ON cast(a.ScheduleID as varchar(1000)) = b.[name] JOIN ReportServer.dbo.ReportSchedule c ON a.ScheduleID = c.ScheduleID JOIN ReportServer.dbo.Subscriptions d ON c.SubscriptionID = d.SubscriptionID JOIN ReportServer.dbo.[Catalog] e ON d.report_oid = e.itemid
This can be useful if you need to explicitly execute the subscription directly from SQL or need to customize the SQL Agent job in some way such as preventing the report from being run based on conditions that cannot be defined in SSRS subscription manager.