(3S,3'S,4'R,6'S,8'R,8'aR)-5-(4-hydroxybut-1-ynyl)-6'-[4-(2-hydroxyethoxy)phenyl]-8'-[(4S)-4-hydroxy-4-phenylbutanoyl]-3',4'-diphenylspiro[1H-indole-3,7'-4,6,8,8a-tetrahydro-3H-pyrrolo[2,1-c][1,4]oxazine]-1',2-dione;(3S,3'S,4'R,6'S,8'R,8'aR)-6'-[4-(2-hydroxyethoxy)phenyl]-8'-pent-4-enoyl-3',4'-diphenylspiro[1H-indene-3,7'-4,6,8,8a-tetrahydro-3H-pyrrolo[2,1-c][1,4]oxazine]-1',2-dione;dimethyl 2-[3-[(3S,3'S,4'R,6'S,8'R,8'aR)-6'-(4-hydroxyphenyl)-1',2-dioxo-3',4'-diphenyl-8'-(prop-2-enylcarbamoyl)spiro[1H-indole-3,7'-4,6,8,8a-tetrahydro-3H-pyrrolo[2,1-c][1,4]oxazine]-5-yl]prop-2-ynyl]propanedioate