| | ethyl (9Z,19E,21E)-13-(acetyloxy)-2,15,17,32-tetrahydroxy-11-methoxy-3,7,12,14,16,18,22,28-octamethyl-6,23-dioxo-8,33-dioxa-24,29-diazapentacyclo[23.6.1.14,7.05,³¹.0²6,³°]tritriaconta-1(31),2,4,9,19,21,25(32),26(30),27-nonaene-27-carboxylate CAS:21240-39-1 ETHYL 1,3,8-TRIMETHYL-2,4,7-TRIOXO-1,2,3,4,7,8-HEXAHYDROPYRIDO[2,3-D]PYRIMIDINE-5-CARBOXYLATE CAS:950275-72-6 |