O(C(=O)C1C(C)OC(C)(C)N1C(CNC(OCC1C2=C(C=CC=C2)C2=C1C=CC=C2)=O)=O)C1C2CC3C(C2)C(=O)OC13 UBLUVKGNSQWZEY-UHFFFAOYSA-N