Compound 7

tert-Butyl N-(5-{[1,3-bis({1-[2,3-bis({2,3-bis[2,3-bis(prop-2-en-1-yloxy)propoxy]propoxy})propyl]-1H-1,2,3-triazol-4-yl}methoxy)-2-[({1-[2,3-bis({2,3-bis[2,3-bis(prop-2-en-1-yloxy)propoxy]propoxy})propyl]-1H-1,2,3-triazol-4-yl}methoxy)methyl]propan-2-yl]carbamoyl}-5-{[(9H-fluoren-9-ylmethoxy)carbonyl]amino}pentyl)carbamate

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