1,11-bis(3-((1,4,8,11-tetraazacyclotetradecan-1-yl)methyl)benzyl)-1,4,8,11-tetraazacyclotetradecane dodecatrifuoroacetic acid.,1,11-bis(3-((1,4,8,11-tetraazacyclotetradecan-1-yl)methyl)benzyl)-1,4,8,11-tetraazacyclotetradecane dodecatrifuoroacetic acid.,Plerixafor Impurity