Organic compound, light-emitting device, light-emitting apparatus, electronic appliance, and lighting device

An organic compound represented by General Formula (G1):

• wherein:
• Q1 represents sulfur or oxygen;
• R1, R2, R4, and R5 each independently represent hydrogen, deuterium, a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 10 carbon atoms, a substituted or unsubstituted polycyclic alkyl group having 6 to 10 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 carbon atoms, or a substituted or unsubstituted heteroaryl group having 2 to 30 carbon atoms;
• A1 represents an aryl group having 6 to 100 carbon atoms and including a substituted or unsubstituted substituent, or a heteroaryl group having 2 to 100 carbon atoms and including a substituted or unsubstituted substituent;
• R3 represents an aryl group having 6 to 100 carbon atoms and including a substituted or unsubstituted substituent, or a heteroaryl group having 2 to 100 carbon atoms and including a substituted or unsubstituted substituent;
• and
• deuterium is substituted for at least one of hydrogen contained in A1 or at least one of hydrogen contained in R1 to R5.