COc1ccc2c(c1)[nH]c1c(C)nccc12 mol5187 0_1 COc1ccc2c(c1)[nH]c1c(C)[nH+]ccc12 mol5187 1_1 COc1ccc2c(c1)[n-]c1c(C)nccc12 mol5187 -1_1