(2S,3R,4S)-4-[(2S,5R,7S,8R,9S)-2-[(2R,5S)-5-[(2R,3S,5R)-5-[(2S,3S,5R,6R)-6-hydroxy-6-(hydroxymethyl)-3,5-dimethyl-3,4,5,6-tetrahydro-2H-pyran-2-yl]-3-methyltetrahydro-2-furyl]-5-ethyltetrahydro-2-furyl]-9-hydroxy-2,8-dimethyl-1,6-dioxaspiro[4.5]decan-7-yl]-3-methoxy-2-methylpentanoate sodium