3-methoxy-4-methylbenzaldehyde
1,4-diacetyl-3-(2,4,5-trimethoxy-3-methylphenylmethyl)-2,5-piperazinedione
2,4,5-trimethoxy-3-methylbenzaldehyde
(Z)-1-acetyl-3-(2,4,5-trimethoxy-3-methylphenylmethylene)-2,5-piperazinedione
1-acetyl-3-(2,4,5-trimethoxy-3-methylphenyl)methyl-2,5-piperazinedione