integral index index of connectivity
drought intensity index and area index
index of arid dog days or draught index
melt index melt flow index
resistance index pulsatility index
18-Crown-6
18-冠-6
18冠6
18-冠醚-6
18–冠<醚>–6
18-Crown-6-tetracarboxylic
4′-acetylaminobenzo[15]crown5