Tiotropium Impurity 25;Tiotropium EP Impurity C;Tiotropium Related Compound C;Tiotropium Bromide EP Impurity C;Titropium bromide EP impurity C Bromine;Tiotropium Bromide EP Impurity C Bromide;Tiotropium Bromide Monohydrate Impurity C;Tiotropium Bromide Impurity 3(Tiotropium Bromide EP Impurity C);Tiotropium Bromide Impurity 3 (Tiotropium Bromide EP Impurity C Bromine);(1R,3s,5S)-3-[[hydroxy[di(thiophen-2-yl)]acetyl]oxy]-8,8- dimethyl-8-azabicyclo[3.2.1]oct-6-en-8-ium bromide