A Curious Sort of Patient

Steps

 * 1) Collect bark from the first diseased tree (loc: 143,-87,-189)
 * 2) Collect bark from the second diseased tree (loc: 49,-78,110)
 * 3) Collect bark from the third diseased tree (loc: -138,-84,-211)
 * 4) Collect bark from the fourth diseased tree (loc: 221,-85,-567)