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var bs64 = 'atob';
var e1 = 'Y29udGFjdEBtdWthcn';
var e2 = 'JhbWtoYWxpZC5jb20=';
var e = window[bs64](e1 + e2);
console.log(e);
var bs64 = 'atob';
var e1 = 'Y29udGFjdEBtdWthcn';
var e2 = 'JhbWtoYWxpZC5jb20=';
var e = window[bs64](e1 + e2);
console.log(e);