Problems with TPaveText to add text in histogram

ROOT
1

Hi everyone,
I am trying to using TPaveText to add text on my histogram as the standard method, however I get the following errors,

Error: Invalid type ‘“CMS’ in declaration of ‘Preliminary”’ histogram.C:27:
Error: Symbol “CMS Preliminary” is not defined in current scope histogram.C:27:

(Remark: without the TPaveText my histogram can plot out normally)

Here is my code:

void histogram(){

gStyle->SetOptStat(kFALSE);
TFile *histo_signal = new TFile("Hinv_Signal_MC.root");
TCanvas *c1 = new TCanvas("met_pt", "met_pt");
c1.SetLogy();
TTree *signal;
histo_signal->GetObject("signal", signal);
Double_t met_pt_signal;  
signal->SetBranchAddress("met_pt_signal", &met_pt_signal);
TH1D *h1 = new TH1D("h1", "met_pt_signal", 12,100,400);

for(Int_t i = 0; i < signal->GetEntries(); i++){
  signal->GetEntry(i);
  h1.Fill(met_pt_signal);
  }
h1->SetMaximum(150);
h1->SetLineColor(38);
h1->SetLineWidth(1);
h1->GetXaxis()->SetTitle("MET (GeV)");
h1->GetYaxis()->SetTitle("Events");
//h1->SetFillColor(kBlue);
h1.Draw();
TPaveText *pt = new TPaveText(0.2,0.7,0.4,0.85,"NDC");
pt.SetTextSize(0.04);
pt.SetFillColor(0);
pt.SetTextAlign(12);
pt.AddText(“CMS Preliminary”);
pt.Draw();

Please provide the following information:

ROOT Version (e.g.5.34/36):
Platform, compiler (e.g. CentOS 7.3, gcc6.2):

2 
pt->AddText("CMS Preliminary"); // note: " is NOT “
3

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