Patent ID: 7947722

Claim:
An imidazolidinone derivative represented by the general formula (1): or an optically active form thereof, wherein, n and m independently represents an integer of 0 to 5 representively indicating the numbers of substituent groups R 1 and R 2 on the benzene rings; R 1 and R 2 independently represent an optionally substituted alkyl group having 1 to 18 carbon atoms, an optionally substituted aralkyl group having 7 to 18 carbon atoms, an optionally substituted aryl group having 6 to 18 carbon atoms, a halogen atom, a hydroxyl group, an optionally substituted alkoxy group having 1 to 18 carbon atoms, or a nitro group; in case that there are a plurality of R 1 or R 2 , the plural R 1 or R 2 may be all the same or different; *1 and *2 indicate asymmetric carbon atoms.