Offset date conversion failed

Can anyone help me to get below date format

'04/01/2019 7:20:29.581826 AM' to 2019-04-01T07:20:29.58

select convert(varchar(22), 
cast('04/01/2019 7:20:29.581826 AM' as datetime2), 126)
select convert(varchar(22),
 cast('04/01/2019 7:20:29.581826 AM' as datetimeoffset), 126)
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