You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule [(2S)-1-[(5-methyl-1,2-oxazol-3-yl)amino]-1-oxopropan-2-yl] 2,5-dimethyl-1-(thiophen-2-ylmethyl)pyrrole-3-carboxylate .
user
C19H21N3O4S
assistant