2H-1,4-Benzoxazin-3(4H)-one, hexahydro-4-methyl-8a-phenyl-, (E)- 89263-13-8 BRN 5037738 trans-1-Phenyl-5-methyl-2-oxa-5-azabicyclo(4.4.0)decan-4-one trans-4-Methyl-8a-phenylhexahydro-2H-1,4-benzoxazin-3(4H)-one