229307-82-8

2-Propynyloxycarbamic acid 7(R)-[4-hydroxy-3-(N-methoxyethanimidoyl)-8-methyl-2-oxo-2H-1-benzopyran-7-yloxy]-8(R)-hydroxy-10(R)-methoxy-6-oxaspiro[4.5]dec-9(S)-yl ester