COC(=O)C(C)NC(=O)c1c(O)c2c(c3c1OC1(C)OCC(C)C1C3)OC1(C)OCC(C)C1C2	methyl 2-[(11-hydroxy-4,7,15,18-tetramethyl-3,5,14,16-tetraoxapentacyclo[11.7.0.02,10.04,8.015,19]icosa-1,10,12-triene-12-carbonyl)amino]propanoate