Answer

If you mean the Chandraprabhu Swami Jain Derasar on Raja Ram Mohan Roy Road, Prarthana Samaj, Charni Road, the trust name is Vadilal Sarabhai Derasar Trust. ( navkarparivar.com)

Explanation

A Jain directory lists it as “Shree Chandraprabhuswami Jain Derasr” with the address “Vadilal Sarabhai Derasar Trust, Raja Ram Mohan Roy Road, Prathanasabha, Chrniroad.” ( navkarparivar.com)

Takeaway

So the trust associated with that Charni Road derasar is Vadilal Sarabhai Derasar Trust. ( navkarparivar.com)