O=C1C[C@H](CCC(=O)OCc2ccccc2)NC(=O)C[C@H](CCC(=O)OCc2ccccc2)NC(=O)C[C@H](CCC(=O)OCc2ccccc2)N1
Molecular masses are calculated from the standard atomic weights of each element. What is the molecular mass of this molecule?