Compound 12

11-{4-[(5-{5-[(3aS,4S,6aR)-2-Oxo-hexahydro-1H-thieno[3,4-d]imidazolidin-4-yl]pentanamido}-1-{[1,3-bis({1-[2,3-bis({2,3-bis[2,3-bis(2,3-dihydroxypropoxy)propoxy]propoxy})propyl]-1H-1,2,3-triazol-4-yl}methoxy)-2-[({1-[2,3-bis({2,3-bis[2,3- bis(2,3-dihydroxypropoxy)propoxy]propoxy})propyl]-1H-1,2,3-triazol-4-yl}methoxy)methyl]propan-2-yl]carbamoyl}pentyl)carbamoyl]phenyl}-2,2-difluoro-6,16-bis(4-methoxyphenyl)-7,15-dioxa-1λ⁵,3-diaza-2-borapentacyclo[10.6.0.0^3,10.0^4,8.0^14,18]octadeca-1(18),4(8),5,9,11,13,16-heptaen-1-ylium-2-uide

From: A dendritic single-molecule fluorescent probe that is monovalent, photostable and minimally blinking