英文别名1',3',3'-TRIMETHYL-6-HYDROXYSPIRO(2H-1-BENZOPYRAN-2,2'-INDOLINE); 1’,3’-dihydro-1’,3’,3’-trimethyl-spiro[2h-1-benzopyran-2’-[2h]indol]-6-ol; 1,3,3-Trimethyl-6'-hydroxyspiro[indoline-2,2'-[2H][1]benzopyran]; 1,3,3-Trimethylspiro[1H-indole-2(3H),2'-[2H-1]benzopyran]-6'-ol; 1',3',3'-Trimethylspiro[2H-1-benzopyran-2,2'-[1H]-indole]-6-ol; 1',3'-Dihydro-1',3',3'-trimethylspiro[2H-1-benzopyran-2,2'-[2H]indol]-6-ol; 1',3',3'-trimethylspiro[chromene-2,2'-indole]-6-ol; 6-hydroxy spiropyran; 1′,3′,3′-Trimethyl-6-hydroxyspiro(2H-1-benzopyran-2,2′-indoline) 
