(2S)-3-(4-methoxyphenyl)-2-[(3S)-3-(methylamino)-8-oxo-1-azaspiro[4.5]decan-1-yl]propanal = (1S,3S,6S,7S,8R)-7-hydroxy-6-[(4-methoxyphenyl)methyl]-3-(methylamino)-5-azatricyclo[6.3.1.0(1,5)]dodecan-9-one — reaction