Treatment of Acanthamoeba or Balamuthia trophozoites and/or cysts

A compound of Formula 2 or Formula 3:

• or a pharmaceutically acceptable salt thereof;
• wherein:
• R3 and R4 are independently selected from hydrogen, halo, C1-C4alkoxy, and C1-C4haloalkyl, wherein at least one of R3 and R4 is not hydrogen;
• R5 is selected from halo, C1-C4alkoxy, and C1-C4haloalkyl;
• R6 and R7 are independently selected from hydrogen, halo, C1-C4alkoxy, and C1-C4haloalkyl, wherein at least one of R6 and R7 is not hydrogen;
• R8 is selected from halo, C1-C4alkoxy, and C1-C4haloalkyl;
• R9 and R10 are independently selected from hydrogen, halo, C1-C4alkoxy, and C1-C4haloalkyl, wherein at least one of R9 and R10 is not hydrogen;
• RX and RY are independently selected at each occurrence from halo, C1-4alkoxy, and C1-C4haloalkyl;
• o and p are independently selected 0, 1, 2, and 3;
• and
• RA and RB are independently C1-C6alkyl.