label: 4-(4-tert-butyl-2,3-dihydro-1-methyl-3-oxopyrrol-2-yl)-2-isopropyl-2-(3-methyl-2-buten-1-yl)-3(2H)-pyrrolinone
label_lc: 4-(4-tert-butyl-2,3-dihydro-1-methyl-3-oxopyrrol-2-yl)-2-isopropyl-2-(3-methyl-2-buten-1-yl)-3(2h)-pyrrolinone