2 5 8 11 tetraoxatetradecan 14 oic acid July 8, 2019 16 32 64 128 2 5 8 11-tetraoxatridecan-13-ol 2 4 8 10-tetraoxaspiro 5.5 undecane 2 5 7 10-tetraoxaundecane (tou) 1 4 7 10-tetraazacyclododecane-1 4 7 10-tetraacetic acid (dota) 4 8 12 16-tetraoxaeicosan-1-ol