Paul, what appears to be this object is catalogued in:
J/ApJ/639/227/catalog "MSX IRDC (IR dark cloud) candidate catalog (Simon+, 2006)"
J/A+A/505/405/table1 "A catalogue of Spitzer dark clouds (Peretto+, 2009)" where it is named IRDC 341.935+0.313
J/AJ/136/2413/table2 "Galactic midplane Spitzer red sources (Robitaille+, 2008)"
The search I used in Vizier was for the centre of your image - 16h52m36.1s-43d31m52.1s
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