Feb.4,2021  108  US  2021/0033970  Al  Quencher 1  Quencher 2  Quencher 3  ~o  ;\  o  )---l’o___,I~  o  ~O  I  I  \- Quencher4  Quencher 5  Quencher 6  Quencher 11  )=a  ’  HNr<  0  ~  0  HN>=O  Quencher 10  Quencher 9  Quencher 8  -continued 