What is the name of this molecule?

i got 2- butyne
is this right?

The human eye contains a molecule called 11-cis-retinal that changes shape when struck with light of sufficient energy. the change in shape triggers a series of events that results in an electrical signal being sent to the brain that results in vision. the minimum energy required to change the conformation of 11-cis-retinal within the eye is about 164 kj/mol.

All forces cause motion? true or false

Which material burns faster? metal aluminum