COC(=O)[C@H](Cc1ccccc1)NC(=O)N1CCCN(C(=O)N[C@@H](Cc2ccccc2)C(=O)OC)CCCN(C(=O)N[C@@H](Cc2ccccc2)C(=O)OC)CCC1
Molecular masses are calculated from the standard atomic weights of each element. What is the molecular mass of this molecule?