3-(Benzo[d][1,3]dioxol-5-yl)-3-(1,4-dioxa-8-azaspiro[4.5]decan-8-yl)propanoic acid 5g

3-(Benzo[d][1,3]dioxol-5-yl)-3-(1,4-dioxa-8-azaspiro[4.5]decan-8-yl)propanoic acid 5g