enum 4 0 0 chem 66 -1 chem 67 -1 chem 67 -1 chem 68 -1 chem 70 -1 chem 71 -1 chem 72 -1 chem 73 -1 chem 74 -1 chem 75 -1 chem 79 -1 chem 80 -1 chem 81 -1 chem 90 -1 chem 92 1 chem 93 1 chem 98 1 chem 99 1 chem 100 1 chem 102 1  chem 103 1 chem 104 1 chem 105 1 chem 106 1 chem 107 1 chem 108 1 chem 109 1 chem 125 1 chem 127 -1 chem 148 -1 chem 149 -1 chem 150 -1 chem 151 -1 chem 152 -1 chem 153 -1 chem 154 -1 chem 155 -1 chem 156 -1 chem 157 -1 chem 158 -1 chem 159 -1 chem 160 -1 chem 162 1 next 