5-((Acetyl)(tert-butoxycarbonyl)methylenamino)-4,5-dihydro-4-(4-methoxyphenyl)-2,5-dimethyl-3-furancarbonsaeure-tert-butylester

5-((Acetyl)(tert-butoxycarbonyl)methylenamino)-4,5-dihydro-2,5-dimethyl-4-phenyl-3-furancarbonsaeure-tert-butylester