Ask a question about 3H- Indolium, 2- [3- (1, 3- dihydro- 1, 3, 3- trimethyl- 2H- indol- 2- ylidene) - 1- propen- 1- yl] - 1- [6- [(2, 5- dioxo- 1- pyrrolidinyl) oxy] - 6- oxohexyl] - 3, 3- dimethyl- , tetrafluoroborate(1 by BOC Sciences