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What is the molecular formula of the molecule 3-[2-[2-[2-[[4-[2-[2-[2-[3-[2-acetyloxy-5-[4-methyl-5-[(2-methylpropan-2-yl)oxy]-2-[(2-methylpropan-2-yl)oxycarbonylamino]-5-oxopentyl]anilino]-3-oxopropoxy]ethoxy]ethoxy]ethylamino]-4-oxobut-2-ynoyl]amino]ethoxy]ethoxy]ethoxy]propanoic acid ?
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C45H70N4O17
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