It is changed at R1 that has a pentyl chain. The indole Main is substituted at R3 which has a carbonyl team which happens to be also connected to a naphthalene moiety.On top of that, the indole Main is substituted at R3 using a carbonyl team and that is also bonded to your napthalene moeity. Napthalene can be a bicyclic construction of two fused be